Present Continuous

Respuesta correcta: A) is doing

• A) is doing'She' is third person singular, so it takes 'is' plus the -ing form of 'do', which gives 'is doing'.
• B) do'Do' is the plain form of the verb; it needs an auxiliary such as 'does' or the -ing ending to make the present continuous.
• C) doingThe -ing form cannot stand alone in this tense; it requires the verb 'to be' in front of it.
• D) does'Does' belongs to the present simple in questions and negatives, not to the present continuous.

Respuesta correcta: B) The children are playing in the yard.

• A) The children played in the yard yesterday.'Played' is the past simple, so this sentence sits in the past, not the present continuous.
• B) The children are playing in the yard.It joins 'are' with the -ing form 'playing', which is exactly the present continuous pattern.
• C) The children play in the yard every day.'Play' has no auxiliary and no -ing ending, so this is the present simple for habits.
• D) The children will play in the yard tomorrow.'Will' marks the future simple, so this sentence is not in the present continuous.

Respuesta correcta: C) am not

• A) not amIn English the auxiliary comes before 'not'; 'not am' is the wrong order and no one would say it.
• B) do not'Do not' builds the negative of the present simple, not of the present continuous.
• C) am not'Not' goes after 'am' and before the -ing form: 'am not understanding' completes the negative.
• D) am noEnglish builds the negative of 'be' with the word 'not', which is why we say 'am not' and never 'am no'.

Respuesta correcta: D) are

• A) is'Is' goes with he, she and it; with 'you' the auxiliary must be 'are'.
• B) do'Do' forms the present simple in questions, so 'What do you do after class' is a different question about habits.
• C) will'Will' signals the future, so the question would ask about later plans rather than what is happening now.
• D) are'You' pairs with 'are', so the question becomes 'What are you doing', which is correct.

Respuesta correcta: D) watching

• A) watcheingEnglish never adds an extra 'e' before -ing; 'watcheing' is not a form of any verb.
• B) watchyingThe letter 'y' is not used with -ing; the correct spelling is 'watching'.
• C) watched'Watched' is the past simple, and past forms do not appear in the present continuous.
• D) watching'Watch' keeps its full spelling and simply takes -ing, which gives 'watching'.

Respuesta correcta: C) is sitting

• A) is sitingEnglish doubles the final consonant of 'sit' before -ing, so the single 't' spelling is wrong.
• B) sits'Sits' is the present simple in third person and carries no -ing ending at all.
• C) is sittingThe final 't' doubles before -ing, and the subject 'the baby' takes 'is', giving 'is sitting'.
• D) are sitting'The baby' is singular, so the auxiliary must be 'is' and not 'are'.

Respuesta correcta: B) isn't

• A) isntWriting 'isnt' without an apostrophe loses the missing letter and is misspelled.
• B) isn't'Is not' shortens to "isn't" with an apostrophe replacing the missing 'o'.
• C) aren't"Aren't" contracts 'are not', which cannot be used with the singular subject 'she'.
• D) doesn't"Doesn't" contracts 'does not' and belongs to the present simple, not to the verb 'be'.

Respuesta correcta: A) at the moment

• A) at the moment'At the moment' points to an action happening now, which is exactly the use of the present continuous.
• B) every day'Every day' describes a repeated habit, so it goes with the present simple instead.
• C) yesterday'Yesterday' places the action in the past, which belongs to a past tense.
• D) last week'Last week' is a finished past period, so the present continuous cannot be used with it.

Respuesta correcta: B) is raining

• A) rains'Rains' is the present simple; the progress sign 'Look!' calls for the present continuous.
• B) is raining'Look!' signals an action in progress at this moment, so 'is raining' is the correct form.
• C) rained'Rained' is the past simple and cannot follow 'Look!' in the present continuous.
• D) will rain'Will rain' is the future simple, and nothing in the sentence points to a future moment.

Respuesta correcta: D) am listening to

• A) am listen toThe bare verb 'listen' cannot follow 'am'; the present continuous needs the -ing form.
• B) am listening'Listen' must be followed by 'to' before its object, so 'listening' alone is incomplete.
• C) listens to'Listens' is the present simple in third person, which does not match the subject 'I'.
• D) am listening to'Listen to' keeps the preposition 'to' after the -ing form, so the answer is 'am listening to'.

Respuesta correcta: C) write and dance

• A) need and prefer'Need' gives 'needing' and 'prefer' gives 'preferring', and the second one doubles the final r.
• B) begin and open'Begin' and 'open' both take -ing unchanged, so this pair is also regular.
• C) write and dance'Write' gives 'writing' and 'dance' gives 'dancing'; neither verb doubles a letter before -ing.
• D) listen and visit'Listen' gives 'listening' and 'visit' gives 'visiting', both without any change.

Respuesta correcta: A) are

• A) are'Are' agrees with the plural 'parents' and builds the present continuous with 'living'.
• B) is'Is' goes with singular subjects such as 'he', 'she' or 'the parent'.
• C) do'Do' builds the present simple, which would give a question about a permanent address.
• D) were'Were' is the past auxiliary and cannot describe a situation that holds right now.

Respuesta correcta: D) are not using

• A) not are usingThe auxiliary comes before 'not' in English, so 'not are' is the wrong word order.
• B) do not use'Do not use' is the negative of the present simple and lacks the -ing form.
• C) are not useAfter 'are not' the verb must take its -ing form, so the bare 'use' cannot follow.
• D) are not using'Are not using' is the present continuous negative: 'are' for 'we' and 'not' before 'using'.

Respuesta correcta: B) swimming

• A) swiming'Swiming' keeps the final e, which English drops before -ing, so the spelling is wrong.
• B) swimming'Enjoy' is followed by a gerund, and 'swim' becomes 'swimming' when it adds -ing.
• C) to swim'Enjoy' does not take an infinitive; it requires the -ing form of the following verb.
• D) swam'Swam' is the past simple of 'swim' and cannot follow 'enjoys'.

Respuesta correcta: A) is explaining

• A) is explaining'The teacher' is third person singular, so 'is' plus 'explaining' is correct.
• B) are explaining'Are' goes with plural or second person subjects, not with 'the teacher'.
• C) explain'Explain' has no auxiliary and no -ing ending, so it is the present simple.
• D) was explaining'Was explaining' is the past continuous and cannot describe a lesson happening now.

Respuesta correcta: C) I finish my homework every afternoon.

• A) I am finishing my homework right now.'Am finishing' describes an action still in progress at this moment.
• B) I am finishing my homework at the moment.'At the moment' places the action in progress, which is the present continuous.
• C) I finish my homework every afternoon.'Finish' with the frequency expression 'every afternoon' describes a repeated habit.
• D) I am finishing my homework tonight.'Tonight' with the present continuous places the action around now, so it is not finished.

Respuesta correcta: B) are playing

• A) is playing'Is' goes with singular subjects, so it does not agree with the plural 'they'.
• B) are playing'They' takes 'are' and 'play' simply takes -ing, so 'are playing' is correct.
• C) plays'Plays' is the present simple in third person and has no -ing ending.
• D) are playAfter 'are' the verb must take its -ing form, so the bare 'play' cannot follow.

Respuesta correcta: A) Is

• A) Is'Is' opens the question and agrees with the singular subject 'your sister'.
• B) Are'Are' would require a plural subject, but 'your sister' is singular.
• C) Does'Does' forms the present simple question and would need the base verb 'study'.
• D) Did'Did' is the past auxiliary and would describe an action that has already finished.

Respuesta correcta: C) is crying

• A) cries'Cries' is the present simple, which presents the crying as a repeated habit.
• B) was crying'Was crying' is the past continuous and would need a past reference point in the sentence.
• C) is cryingThe situation is happening at the moment of speaking, so 'is crying' is the natural choice.
• D) will cry'Will cry' is the future simple and does not match a situation described as already underway.

Respuesta correcta: D) is snowing

• A) are snowing'It' is singular, so the auxiliary must be 'is' and never 'are'.
• B) snow'Snow' alone has no auxiliary, which would make the sentence the present simple.
• C) is snowAfter the auxiliary 'is' the verb must take its -ing form, so the bare 'snow' cannot follow.
• D) is snowing'It' takes 'is' and 'snow' keeps its spelling before -ing, giving 'is snowing'.