Past Continuous Interrupted

Respuesta correcta: A) At eight last night we were watching a documentary when the power went out.

• A) At eight last night we were watching a documentary when the power went out.Correct! 'Were watching' is the past continuous of a plural subject, and it sets up the background that 'went out' interrupts.
• B) At eight last night we watched a documentary when the power went out.'Watched' is the past simple of a finished action, but the documentary was still in progress when the blackout began.
• C) At eight last night we are watching a documentary when the power went out.'Are watching' is a present continuous; the situation described took place last night, so the tense must be past.
• D) At eight last night we was watching a documentary when the power went out.'Was' agrees with a singular subject, and 'we' is plural, so the plural auxiliary 'were' is required.

Respuesta correcta: D) The children were playing in the park while their parents were having coffee.

• A) The children were play in the park while their parents were having coffee.'Were play' needs the -ing form, so the verb would be 'were playing' and never 'were play'.
• B) The children were playing in the park while their parents had coffee.'Had coffee' is a single completed action, while the continuous is needed to show it going on during the whole period.
• C) The children played in the park while their parents were having coffee.'Played' is the past simple of a finished action, but the play continued across the time the coffee lasted.
• D) The children were playing in the park while their parents were having coffee.Correct! Both subjects are plural, so both clauses take 'were' plus the -ing form of the verb.

Respuesta correcta: B) I dropped my phone while I was waiting for the bus.

• A) I drop my phone while I was waiting for the bus.'Drop' is the base form and describes the present, so it cannot follow a past time reference.
• B) I dropped my phone while I was waiting for the bus.Correct! 'Dropped' is the short completed action and 'was waiting' is the longer background situation it interrupted.
• C) I dropped my phone while I was waiting in the bus.'Waiting in the bus' uses the wrong preposition; a person waits for a vehicle and stays inside it only after boarding.
• D) I dropped my phone while I was wait for the bus.'Was wait' needs the -ing form, so the past continuous would be 'was waiting'.

Respuesta correcta: C) What were you doing when the earthquake shook the whole city?

• A) What was you doing when the earthquake was shaking the whole city?'Was you doing' uses the singular auxiliary 'was' with the pronoun 'you', which always takes 'were'.
• B) What did you do when the earthquake shook the whole city?'Did you do' is the past simple question, which asks about a single finished action instead of the ongoing situation.
• C) What were you doing when the earthquake shook the whole city?Correct! 'Were doing' is the past continuous with the plural pronoun 'you', and it asks about the activity in progress.
• D) What were you done when the earthquake shook the whole city?'Were you done' places the participle 'done' after a form of 'be', which produces a passive meaning and not the past continuous.

Respuesta correcta: A) The rain was falling heavily, so the coach could not climb the road.

• A) The rain was falling heavily, so the coach could not climb the road.Correct! The rain in progress explains why the coach was unable to climb, and 'could not' is the past of the modal.
• B) The rain was falling heavily, so the coach cannot climb the road.'Cannot' is the present form of the modal, but the sentence describes a situation that happened in the past.
• C) The rain fell heavily, so the coach was not climbing the road.'Fell' would work as the past simple of the rain, but the explanation is better expressed as a situation that lasted.
• D) The rain is falling heavily, so the coach could not climb the road.'Is falling' is a present continuous and cannot explain an event that took place in the past.

Respuesta correcta: C) My sister was studying medicine when she decided to travel abroad.

• A) My sister was study medicine when she decided to travel abroad.'Was study' needs the -ing form, so the continuous would be 'was studying'.
• B) My sister studied medicine when she was decided to travel abroad.'Was decided' places a participle after the auxiliary, which changes the meaning to a passive construction.
• C) My sister was studying medicine when she decided to travel abroad.Correct! 'Was studying' is the ongoing situation and 'decided' is the completed decision that interrupted it.
• D) My sister was studying medicine when she is decided to travel abroad.'Is decided' mixes the present auxiliary with a past event, so the sentence has no consistent time reference.

Respuesta correcta: D) They were waiting at the airport when their flight was cancelled.

• A) They were wait at the airport when their flight was cancelled.'Were wait' needs the -ing form, so the past continuous would be 'were waiting'.
• B) They were waiting at the airport when their flight cancelled.'Flight cancelled' has no auxiliary, so the clause is incomplete; the passive needs 'was cancelled'.
• C) They waited at the airport when they were waiting for the news.'They waited' ends the situation before the news arrives, and 'were waiting for the news' describes a different activity.
• D) They were waiting at the airport when their flight was cancelled.Correct! 'Were waiting' is the long background and 'was cancelled' is the short event that came in and ended it.

Respuesta correcta: B) At nine she was writing an email, and at ten she was packing her bags.

• A) At nine she is writing an email, and at ten she is packing her bags.'Is writing' and 'is packing' describe activities happening now, not during last night.
• B) At nine she was writing an email, and at ten she was packing her bags.Correct! Both activities were in progress at different moments of the same evening, so both take 'was' plus -ing.
• C) At nine she wrote an email, and at ten she packs her bags.'Wrote' and 'packs' mix the past simple with the present simple, so the narration has no consistent time.
• D) At nine she was write an email, and at ten she was pack her bags.'Was write' and 'was pack' need the -ing form to form the past continuous of the verb.

Respuesta correcta: A) He wasn't listening to the teacher because he was thinking about the weekend.

• A) He wasn't listening to the teacher because he was thinking about the weekend.Correct! 'Wasn't' negates the progressive formed with 'was' plus 'listening', and the second clause explains the reason.
• B) He didn't listened to the teacher because he was thinking about the weekend.'Didn't listened' mixes a past auxiliary with a past form of the verb, so the tense is marked twice.
• C) He wasn't listen to the teacher because he was thinking about the weekend.'Wasn't listen' needs the -ing form, so the negative progressive would be 'wasn't listening'.
• D) He not was listening to the teacher because he was thinking about the weekend.English places the auxiliary before 'not' in a negative clause, never after it.

Respuesta correcta: B) While the technician was repairing the computer, the students were working on the project.

• A) While the technician repaired the computer, the students was working on the project.'Repaired' and 'was working' belong to different tenses in clauses that are supposed to run in parallel.
• B) While the technician was repairing the computer, the students were working on the project.Correct! Both subjects are singular, so both clauses take 'was' plus the -ing form of the verb.
• C) While the technician was repairing the computer, the students was working on the project.'The students' is plural, so its verb must be 'were working' rather than 'was working'.
• D) While the technician were repairing the computer, the students was working on the project.'The technician' is singular, so its auxiliary must be 'was repairing' and not 'were repairing'.

Respuesta correcta: D) The lights were flickering and the crowd was growing louder when the power finally failed.

• A) The lights were flickering and the crowd were growing louder when the power finally failed.'The crowd' is a singular collective noun in this use, so its verb is 'was growing' and not 'were growing'.
• B) The lights flickered and the crowd was growing louder when the power finally failed.'Flickered' reports a single completed action, while the passage describes something that had been happening for a while.
• C) The lights were flicker and the crowd was growing louder when the power finally failed.'Were flicker' needs the -ing form to build the past continuous.
• D) The lights were flickering and the crowd was growing louder when the power finally failed.Correct! Both 'were flickering' and 'was growing' describe the situation in progress just before the failure.

Respuesta correcta: C) I was very tired, so I sat down and closed my eyes.

• A) I was sit down, so I sat down and closed my eyes.'Was sit down' needs the -ing form to form a progressive, and it is the base form that fits with 'sit down'.
• B) I was very tired, so I sit down and close my eyes.'Sit' and 'close' are base forms and would describe a repeated present action rather than what happened.
• C) I was very tired, so I sat down and closed my eyes.Correct! 'Was tired' describes the state and 'sat down' and 'closed' report the sequence of actions that followed it.
• D) I was very tired, so I was sat down and closed my eyes.'Was sat down' places a past participle after 'was', which would describe a passive or a reflexive action.

Respuesta correcta: A) No, they weren't. The workers were clearing them all morning.

• A) No, they weren't. The workers were clearing them all morning.Correct! 'Were' agrees with the plural pronoun 'they' and 'were clearing' describes the work in progress during the morning.
• B) No, they wasn't. The workers were clearing them all morning.'They wasn't' mixes the plural pronoun with the singular auxiliary; a plural subject needs 'weren't'.
• C) No, they didn't. The workers were clearing them all morning.'Didn't' answers a question built with 'do', 'does' or 'did', not a question with 'were'.
• D) No, they aren't. The workers were clearing them all morning.'Aren't' is the present form of the negative, so it cannot answer a question about this morning's past.

Respuesta correcta: C) The children were watching cartoons, but their mother was cleaning the kitchen.

• A) The children were watching cartoons, but their mother were cleaning the kitchen.'Their mother' is a singular subject, so its verb must be 'was cleaning' rather than 'were cleaning'.
• B) The children was watching cartoons, but their mother was cleaning the kitchen.'The children' is plural, so its verb must be 'were watching' rather than 'was watching'.
• C) The children were watching cartoons, but their mother was cleaning the kitchen.Correct! 'The children' is plural and 'their mother' is singular, so each clause takes the auxiliary that matches its own subject.
• D) The children watched cartoons, but their mother was cleaning the kitchen.'Watched' reports a finished action, while the sentence describes two activities happening at the same time.

Respuesta correcta: B) The teacher asked us what we were doing at that hour.

• A) The teacher asked us what we were done at that hour.'Were done' places a participle after the auxiliary and loses the progressive meaning entirely.
• B) The teacher asked us what we were doing at that hour.Correct! The direct question would be 'What were you doing at that hour?', so the order of the auxiliary and the subject is preserved.
• C) The teacher asked us what did we do at that hour.'What did we do' is the past simple; when the direct question uses the continuous, the reported form must too.
• D) The teacher asked us what we did at that hour.'What we did' changes the tense but also leaves the sentence without the auxiliary that the past continuous needs.

Respuesta correcta: D) While the storm was raging outside, the family sat around the fire and told stories.

• A) While the storm was raging outside, the family sat around the fire and tell stories.'Tell' is the base form, so the last clause would describe a repeated action in the present instead of what the family did.
• B) While the storm is raging outside, the family sat around the fire and told stories.'Is raging' is a present continuous and cannot describe the background of an evening that is already over.
• C) While the storm was rage outside, the family sat around the fire and told stories.'Was rage' needs the -ing form to build the past continuous of the verb.
• D) While the storm was raging outside, the family sat around the fire and told stories.Correct! The storm in progress is the background introduced by 'while' and the family activities are the foreground.

Respuesta correcta: A) The battery went flat, so the passengers were waiting on the road for two hours.

• A) The battery went flat, so the passengers were waiting on the road for two hours.Correct! 'Went flat' is the short completed cause and 'were waiting' is the longer consequence it produced.
• B) The battery went flat, so the passengers waited on the road for two hours.'Waited' ends the waiting at a single moment, while the sentence specifies a duration of two hours.
• C) The battery is flat, so the passengers were waiting on the road for two hours.'Is flat' is a present form and cannot explain a past situation.
• D) The battery went flat, so the passengers were wait on the road for two hours.'Were wait' needs the -ing form to form the past continuous.

Respuesta correcta: B) She wasn't listening to me; she was looking at her phone instead.

• A) She didn't listening to me; she was looking at her phone instead.'Didn't listening' mixes the auxiliary 'did' with the -ing form, which never occurs in English.
• B) She wasn't listening to me; she was looking at her phone instead.Correct! Both activities are in the past continuous, and 'instead' marks the contrast between what she was doing and what she was not doing.
• C) She wasn't listen to me; she was looking at her phone instead.'Wasn't listen' needs the -ing form to form the negative past continuous.
• D) She wasn't listening to me; she was look at her phone instead.'Was look' needs the -ing form, so the correct form is 'was looking'.

Respuesta correcta: D) The band was playing and nobody was talking; everyone was enjoying the concert.

• A) The band was play and nobody was talking; everyone was enjoying the concert.'Was play' needs the -ing form to form the past continuous of the verb.
• B) The band was playing and nobody were talking; everyone was enjoying the concert.'Nobody' is a singular pronoun meaning no one, so its verb is 'was talking' and not 'were talking'.
• C) The band were playing and nobody was talking; everyone were enjoying the concert.'The band' is a singular collective noun here, so it takes 'was playing'; 'everyone' is also singular.
• D) The band was playing and nobody was talking; everyone was enjoying the concert.Correct! 'The band' is singular, 'nobody' is singular and 'everyone' is singular, so all three take 'was'.

Respuesta correcta: C) When the bell rang, the children were already packing their bags.

• A) When the bell rang, the children were pack already their bags.'Were pack' needs the -ing form, and 'already' cannot stand between the auxiliary and the subject in this pattern.
• B) When the bell was ringing, the children already packed their bags.'Was ringing' makes the bell a long situation and 'packed' ends the packing at that moment, which is the opposite of 'already'.
• C) When the bell rang, the children were already packing their bags.Correct! The bell marks the moment and the continuous with 'already' shows that the packing had started earlier and was still going on.
• D) When the bell rang, the children were packing their bags already later.'Already later' places the adverb after the verb and adds a word that contradicts the meaning of 'already'.