The mechanic turned off the engine before he began the inspection.
The mechanic turned ___ the engine before the inspection.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: C)off
💡 Explicación
A separable phrasal verb keeps its two meanings together when the object is a pronoun or an indefinite reference, as in turn it off, but allows the particle to sit inside the phrase when the object is a specific noun.
Ver respuesta
Respuesta correcta: C)off
A)outNo. 'Turn out' means to produce a result or to discover something, and it has nothing to do with stopping a machine from running.
B)overNo. 'Turn over' means to rotate an object or to hand it to someone else, which does not stop an engine.
C)offCorrect! 'Turn off' is a separable phrasal verb, and with a specific object such as the engine the particle can stand between the verb and the noun.
D)downNo. 'Turn down' means to reduce a volume or to reject an offer, and neither sense applies to the engine in this sentence.
💡 Explicación
A separable phrasal verb keeps its two meanings together when the object is a pronoun or an indefinite reference, as in turn it off, but allows the particle to sit inside the phrase when the object is a specific noun.
Pregunta 2
Pregunta 2 · D3Bloom: Apply
Please take your notebook out of your bag before the test begins.
Please take ___ your notebook before the test begins.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: D)out
💡 Explicación
The separability of a phrasal verb depends on the object. A pronoun forces the particle to follow, as in take it out, while a full noun phrase allows either order, and both are accepted in careful written English.
Ver respuesta
Respuesta correcta: D)out
A)offNo. 'Take off' describes leaving the ground or removing a garment, and neither sense fits removing a notebook from a bag.
B)upNo. 'Take up' means to begin a hobby or a task, which has no connection to the object being removed.
C)overNo. 'Take over' means to assume control of something, and the sentence is about a physical removal instead.
D)outCorrect! 'Take out' is separable, and with the specific noun phrase 'your notebook' the particle may be placed between the verb and the object.
💡 Explicación
The separability of a phrasal verb depends on the object. A pronoun forces the particle to follow, as in take it out, while a full noun phrase allows either order, and both are accepted in careful written English.
Pregunta 3
Pregunta 3 · D3Bloom: Understand
The students put their books away when the teacher entered the room.
The students put ___ their books when the teacher entered.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: C)away
💡 Explicación
Particles that express displacement, such as away and out, belong to many separable phrasal verbs. The choice of the particle and the separability of the verb are independent decisions that both have to be right.
Ver respuesta
Respuesta correcta: C)away
A)onNo. 'Put on' means to place a garment on the body, and the sentence is about storing books away.
B)outNo. 'Put out' means to extinguish a fire or to extinguish something, and it does not describe tidying books.
C)awayCorrect! 'Put away' is separable, and the particle can stand between the verb and the specific noun phrase 'their books'.
D)offNo. 'Put off' means to postpone something, and the sentence describes storing objects in their place.
💡 Explicación
Particles that express displacement, such as away and out, belong to many separable phrasal verbs. The choice of the particle and the separability of the verb are independent decisions that both have to be right.
Pregunta 4
Pregunta 4 · D4Bloom: Analyze
The supervisor filled in the form before the applicant signed the bottom line.
The supervisor filled ___ the form before the applicant signed it.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: A)off
💡 Explicación
Fill in and fill out both describe completing a form, and both are separable. The choice between them is largely a matter of regional variety and of the noun that follows, not of the grammar of the phrase.
Ver respuesta
Respuesta correcta: A)off
A)offNo. 'Fill off' is not an expression used for completing forms in standard English.
B)outNo. 'Fill out' means to complete a written document by writing in it, which is a different act from filling the shape of the paper in.
C)upNo. 'Fill up' means to make a container full, and the sentence is about completing a document rather than filling a space.
D)inCorrect! 'Fill in' is a separable phrasal verb used for completing a form, and the particle may stand before the specific noun phrase.
💡 Explicación
Fill in and fill out both describe completing a form, and both are separable. The choice between them is largely a matter of regional variety and of the noun that follows, not of the grammar of the phrase.
Pregunta 5
Pregunta 5 · D4Bloom: Evaluate
The neighbours called off the meeting because of the heavy rain.
The neighbours called ___ the meeting because of the heavy rain.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: C)off
💡 Explicación
Call off, put off and bring off are all separable phrasal verbs that share the idea of cancelling or postponing. In each case the particle can be inserted before a specific object and must follow a pronoun.
Ver respuesta
Respuesta correcta: C)off
A)onNo. 'Call on' means to visit someone briefly or to ask someone to contribute, and neither sense cancels a meeting.
B)upNo. 'Call up' is a military term for mobilising someone, and it has no use in cancelling a community meeting.
C)offCorrect! 'Call off' is separable, and with the specific noun phrase 'the meeting' the particle can be placed between the verb and its object.
D)outNo. 'Call out' means to shout or to send for a professional, and the sentence states the opposite of summoning anyone.
💡 Explicación
Call off, put off and bring off are all separable phrasal verbs that share the idea of cancelling or postponing. In each case the particle can be inserted before a specific object and must follow a pronoun.
Pregunta 6
Pregunta 6 · D4Bloom: Apply
The government cut the price of fuel by half at the beginning of the year.
The government cut ___ the price of fuel by half.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: D)down
💡 Explicación
Reduce has two separable phrasal verbs, cut down and cut, both of which take a specific noun before or after the particle. The choice between them depends on register, and both are fully accepted in English.
Ver respuesta
Respuesta correcta: D)down
A)outNo. 'Cut out' means to remove a section of a text or to stop using something, and the sentence reduces a price instead.
B)offNo. 'Cut off' means to interrupt a supply or to separate something, and it does not describe reducing a price.
C)overNo. 'Cut over' is not a standard expression for reducing a price, and the particle belongs to other senses such as switching a channel.
D)downCorrect! 'Cut down' is separable and is the standard expression for reducing a price, a cost or a quantity.
💡 Explicación
Reduce has two separable phrasal verbs, cut down and cut, both of which take a specific noun before or after the particle. The choice between them depends on register, and both are fully accepted in English.
Pregunta 7
Pregunta 7 · D4Bloom: Analyze
The company turned down the offer because the conditions were unacceptable.
The company turned ___ the offer because the conditions were unacceptable.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: A)down
💡 Explicación
Turn down and turn up form a pair expressing refusal and acceptance, and each of them is separable. The particle carries the direction of the decision in the same way that up and down carry height in other contexts.
Ver respuesta
Respuesta correcta: A)down
A)downCorrect! 'Turn down' is separable and is the standard expression for refusing an offer or a request.
B)upNo. 'Turn up' means to increase a volume or to arrive, and neither sense refuses a proposal.
C)inNo. 'Turn in' means to submit a document or to surrender, and it would suggest accepting rather than refusing.
D)offNo. 'Turn off' means to stop a machine or a supply, and the sentence is about a negotiation rather than an engine.
💡 Explicación
Turn down and turn up form a pair expressing refusal and acceptance, and each of them is separable. The particle carries the direction of the decision in the same way that up and down carry height in other contexts.
Pregunta 8
Pregunta 8 · D4Bloom: Evaluate
The teacher wrote down every word that the student said during the interview.
The teacher wrote ___ every word that the student said.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: B)down
💡 Explicación
Write down, note down and jot down are all separable and all mean to record something. What they share is the idea of transferring speech or a thought onto paper, and the particle marks the direction of that transfer.
Ver respuesta
Respuesta correcta: B)down
A)outNo. 'Write out' means to write something in full or to copy a text, and the sentence is about recording speech as it happens.
B)downCorrect! 'Write down' is separable, and with the specific phrase 'every word' the particle can stand between the verb and its object.
C)offNo. 'Write off' means to cancel a debt or to treat something as a loss, and neither sense applies to a record of an interview.
D)overNo. 'Write over' is not a standard expression in this sense, and 'write over' usually refers to writing across an existing text.
💡 Explicación
Write down, note down and jot down are all separable and all mean to record something. What they share is the idea of transferring speech or a thought onto paper, and the particle marks the direction of that transfer.
Pregunta 9
Pregunta 9 · D4Bloom: Apply
The committee has put off the final decision until the next meeting.
The committee has put ___ the final decision until the next meeting.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: A)off
💡 Explicación
Put off, put on, put up and put away are four separable verbs built on the same simple verb. Their particles carry completely different meanings, so the phrase has to be learned as a whole rather than assembled from its parts.
Ver respuesta
Respuesta correcta: A)off
A)offCorrect! 'Put off' is separable, and with the specific noun phrase 'the final decision' the particle may be placed between the verb and the object.
B)onNo. 'Put on' means to place a garment on the body or to start a machine, and neither sense postpones anything.
C)upNo. 'Put up' means to raise something or to display a notice, and it never means to postpone a decision.
D)awayNo. 'Put away' means to store something in its place, and the committee has not hidden the decision anywhere.
💡 Explicación
Put off, put on, put up and put away are four separable verbs built on the same simple verb. Their particles carry completely different meanings, so the phrase has to be learned as a whole rather than assembled from its parts.
Pregunta 10
Pregunta 10 · D4Bloom: Analyze
The new manager took over the department in March and reorganised the team.
The new manager took ___ the department in March.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: C)over
💡 Explicación
Take over expresses a transfer of responsibility, and it is separable with a specific object. When the object is a pronoun the particle must follow, as in took it over, and that constraint is what defines the phrase as separable rather than inseparable.
Ver respuesta
Respuesta correcta: C)over
A)offNo. 'Take off' describes a departure or the removal of a garment, and the sentence is about assuming responsibility.
B)upNo. 'Take up' means to begin a task or a hobby, and the manager was already appointed rather than starting the role.
C)overCorrect! 'Take over' is separable and is the standard expression for assuming control of something that someone else had.
D)outNo. 'Take out' means to remove something or to arrange a loan, and neither sense transfers responsibility.
💡 Explicación
Take over expresses a transfer of responsibility, and it is separable with a specific object. When the object is a pronoun the particle must follow, as in took it over, and that constraint is what defines the phrase as separable rather than inseparable.
Pregunta 11
Pregunta 11 · D4Bloom: Evaluate
The organisers had to call the event off because of the storm.
The organisers had to call ___ because of the storm.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: D)it off
💡 Explicación
A pronoun object forces the particle to come after it, which is the practical test for separability. With a general reference the same verb is written call it off or simply call off, and the phrase remains fully idiomatic in both forms.
Ver respuesta
Respuesta correcta: D)it off
A)inNo. 'Call in' means to telephone the place where one works or to report a defect, and neither sense cancels an event.
B)backNo. 'Call back' means to telephone someone again, and the sentence is about cancelling rather than returning a call.
C)throughNo. 'Call through' means to telephone an extension internally, and it has no connection with cancelling a public event.
D)it offCorrect! With a pronoun as the object the particle must follow, so 'call it off' is the only correct order for this separable verb.
💡 Explicación
A pronoun object forces the particle to come after it, which is the practical test for separability. With a general reference the same verb is written call it off or simply call off, and the phrase remains fully idiomatic in both forms.
Pregunta 12
Pregunta 12 · D4Bloom: Apply
Please switch off the lights when you leave the laboratory.
Please switch ___ the lights when you leave the laboratory.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: B)off
💡 Explicación
Switch off, turn off and put off all end in off but belong to different semantic families. Particles do not migrate between verbs in English, so each collocation has to be learned as an independent item.
Ver respuesta
Respuesta correcta: B)off
A)upNo. 'Switch up' is not a standard expression for stopping a light, and the particle 'up' belongs to other verbs such as turn up.
B)offCorrect! 'Switch off' is a separable phrasal verb, and with the specific noun phrase 'the lights' the particle can sit between the verb and the object.
C)overNo. 'Switch over' means to change from one option or channel to another, and the sentence is about turning something off.
D)downNo. 'Switch down' is not an established expression, and 'switch off' is the collocation that English uses for lights and machines.
💡 Explicación
Switch off, turn off and put off all end in off but belong to different semantic families. Particles do not migrate between verbs in English, so each collocation has to be learned as an independent item.
Pregunta 13
Pregunta 13 · D4Bloom: Analyze
The school is setting up a new laboratory for the science students.
The school is setting ___ a new laboratory for the science students.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: B)up
💡 Explicación
Set up and set down form a pair with opposite meanings, and both are separable. They belong to a long family of verbs built on set, each of which has its own particle and its own independent meaning.
Ver respuesta
Respuesta correcta: B)up
A)offNo. 'Set off' means to start a journey or to cause something to happen, and the sentence describes establishing a facility.
B)upCorrect! 'Set up' is separable and is the standard expression for establishing an institution or a piece of equipment.
C)outNo. 'Set out' means to begin a task or to arrange a plan, and the laboratory is already being established in the sentence.
D)downNo. 'Set down' means to put something down gently or to write a sum, and it does not describe founding a laboratory.
💡 Explicación
Set up and set down form a pair with opposite meanings, and both are separable. They belong to a long family of verbs built on set, each of which has its own particle and its own independent meaning.
Pregunta 14
Pregunta 14 · D4Bloom: Evaluate
The coach encouraged the runners and kept them going until the last lap.
The coach kept ___ the runners until the last lap.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: B)them going
💡 Explicación
Keep, leave, get and put are four verbs that build separable phrases with a wide variety of particles. In each of them a pronoun object has to sit directly after the verb, which is the feature that makes them separable in the first place.
Ver respuesta
Respuesta correcta: B)them going
A)onNo. 'Kept on' means to continue doing something oneself, and the coach was not the one running.
B)them goingCorrect! 'Keep someone going' is separable, and with a pronoun object the rest of the phrase must follow it in that order.
C)out themNo. 'Them' is a pronoun and cannot stand between the verb and its particle in this phrase, so the order is impossible.
D)up themNo. 'Keep them up' refers to staying awake, and it says nothing about the encouragement the coach gave.
💡 Explicación
Keep, leave, get and put are four verbs that build separable phrases with a wide variety of particles. In each of them a pronoun object has to sit directly after the verb, which is the feature that makes them separable in the first place.
Pregunta 15
Pregunta 15 · D4Bloom: Apply
The technician threw away the damaged cable and ordered a new one.
The technician threw ___ the damaged cable and ordered a new one.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: C)away
💡 Explicación
Throw away, throw out and throw off are three separable phrasal verbs built on the same simple verb. The particle decides whether the object is discarded, ejected or released, and the grammatical pattern is identical in all three.
Ver respuesta
Respuesta correcta: C)away
A)inNo. 'Throw in' is used in informal English to mean to contribute or to join, and it does not describe discarding an object.
B)overNo. 'Throw over' is not a standard expression for discarding, and 'throw over' usually means to abandon or to defeat.
C)awayCorrect! 'Throw away' is separable and is the standard expression for getting rid of something that is no longer useful.
D)offNo. 'Throw off' means to discard lightly or to mislead someone, and the cable was deliberately scrapped.
💡 Explicación
Throw away, throw out and throw off are three separable phrasal verbs built on the same simple verb. The particle decides whether the object is discarded, ejected or released, and the grammatical pattern is identical in all three.
Pregunta 16
Pregunta 16 · D4Bloom: Analyze
The two teams played off the final match on the last day of the tournament.
The two teams played ___ the final match on the last day of the tournament.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: D)off
💡 Explicación
Play off and play up are separable phrasal verbs of the tournament kind, and their meanings are quite specialised. Phrasal verbs often develop senses that are far from the literal reading of their two parts, which is why they have to be learned as whole items.
Ver respuesta
Respuesta correcta: D)off
A)outNo. 'Play out' means to complete a game or to perform something in full, and it does not express the idea of a decider.
B)upNo. 'Play up' is a British expression meaning to behave badly or to complain, and it has no relevance here.
C)overNo. 'Play over' means to replay a game that was stopped, and the sentence describes a match played as a decider.
D)offCorrect! 'Play off' is separable and is the standard expression for a match played to settle a tie or to decide a championship.
💡 Explicación
Play off and play up are separable phrasal verbs of the tournament kind, and their meanings are quite specialised. Phrasal verbs often develop senses that are far from the literal reading of their two parts, which is why they have to be learned as whole items.
Pregunta 17
Pregunta 17 · D4Bloom: Evaluate
The plane turned back and landed at the nearest airport.
The plane turned ___ because the weather had closed the airport.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: A)back
💡 Explicación
Turn back, turn down, turn up and turn off are four separable verbs built on turn, each with its own particle and its own meaning. Direction of travel, refusal, arrival and stopping are all expressed by the choice of particle.
Ver respuesta
Respuesta correcta: A)back
A)backCorrect! 'Turn back' is separable and is the standard expression for reversing the direction of a journey.
B)upNo. 'Turn up' means to increase a volume or to arrive, and neither sense describes a change of flight direction.
C)offNo. 'Turn off' means to stop a machine, and the plane was not stopped but redirected.
D)outNo. 'Turn out' means to produce a result or to discover something, and it has no use for a change of route.
💡 Explicación
Turn back, turn down, turn up and turn off are four separable verbs built on turn, each with its own particle and its own meaning. Direction of travel, refusal, arrival and stopping are all expressed by the choice of particle.
Pregunta 18
Pregunta 18 · D4Bloom: Analyze
Please look over the report before the committee meets on Friday.
Please look ___ the report before the committee meets on Friday.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: B)over
💡 Explicación
Look over, look into and look after are separable phrasal verbs of the same family, and their particles mark different kinds of attention: a surface review, a deep investigation and a responsibility. Each one is learned as a complete unit.
Ver respuesta
Respuesta correcta: B)over
A)intoNo. 'Look into' means to investigate a matter in depth, and it would suggest a research task rather than a revision.
B)overCorrect! 'Look over' is separable and means to examine something carefully, which is what the sentence asks the reader to do.
C)afterNo. 'Look after' means to take care of someone or something, and no responsibility is mentioned in the sentence.
D)upNo. 'Look up' means to consult a reference or to improve, and it does not mean to examine a document.
💡 Explicación
Look over, look into and look after are separable phrasal verbs of the same family, and their particles mark different kinds of attention: a surface review, a deep investigation and a responsibility. Each one is learned as a complete unit.
Pregunta 19
Pregunta 19 · D4Bloom: Apply
The students worked out the solution together after class.
The students worked ___ the solution together after class.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: D)out
💡 Explicación
Work out, work in and work up are separable phrasal verbs with unrelated meanings despite the shared verb. Their prepositional meanings are so fixed that the phrase is normally treated as a single lexical unit in a learner's dictionary.
Ver respuesta
Respuesta correcta: D)out
A)inNo. 'Worked in' means to have an influence on something, and it does not describe the process of finding an answer.
B)atNo. 'Worked at' means to make an effort to improve something or to study, and the sentence reports a completed result.
C)upNo. 'Worked up' means to become agitated or to build something gradually, and neither sense applies to a solution found by a group.
D)outCorrect! 'Work out' is separable and is the standard expression for solving a problem or reaching a conclusion.
💡 Explicación
Work out, work in and work up are separable phrasal verbs with unrelated meanings despite the shared verb. Their prepositional meanings are so fixed that the phrase is normally treated as a single lexical unit in a learner's dictionary.
Pregunta 20
Pregunta 20 · D4Bloom: Evaluate
The clerk filled in the missing details and stamped the form twice.
The clerk filled ___ the missing details and stamped the form twice.
Elige una opción para comprobar tu respuesta.
Respuesta correcta: A)in
💡 Explicación
Fill in and fill out are so close in meaning that speakers choose between them by region and by habit. Grammatically they behave identically as separable verbs, and both accept a noun phrase before or after the particle.
Ver respuesta
Respuesta correcta: A)in
A)inCorrect! 'Fill in' is separable and is the standard expression for writing the entries that are missing from a form.
B)outNo. 'Fill out' means to complete a document as a whole, whereas 'fill in' names the writing of the individual missing entries.
C)overNo. 'Fill over' is not a standard expression, and 'fill' with 'over' belongs to other senses such as filling a form in a different colour.
D)upNo. 'Fill up' means to make a container full or to write in a form completely, and the sentence is about individual details.
💡 Explicación
Fill in and fill out are so close in meaning that speakers choose between them by region and by habit. Grammatically they behave identically as separable verbs, and both accept a noun phrase before or after the particle.
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