Passive Voice Present Past

Respuesta correcta: A) The library was built in 1975.

• A) The library was built in 1975.Correct. 'Was built' is the past passive: 'to be' in the past plus the participle of the main verb.
• B) The library was build in 1975.Incorrect. The passive requires the participle 'built', not the base form 'build', after the auxiliary.
• C) The library is built in 1975.Incorrect. 'Is built' is the present passive and does not match the date '1975', which requires the past.
• D) The library built in 1975.Incorrect. Without 'to be' there is no passive, because the main verb stays active and has no object.

Respuesta correcta: C) is spoken

• A) speaksIncorrect. 'Speaks' is active voice and also does not agree with the subject 'English', which is singular.
• B) is speakIncorrect. After 'is', the verb takes the participle 'spoken', not the base form 'speak'.
• C) is spokenCorrect. 'Is spoken' is the present passive and describes a general practice without naming who performs it.
• D) are spokenIncorrect. 'Are' goes with a plural subject, and 'English' is singular in this sentence.

Respuesta correcta: B) was built

• A) is builtIncorrect. 'Is built' is the present passive and contradicts the date '1998' in the sentence.
• B) was builtCorrect. 'Was built' is the past passive, and the agent is mentioned at the end with 'by'.
• C) was buildIncorrect. The past passive requires the participle 'built', not the base form of the verb.
• D) builtIncorrect. Without the auxiliary 'to be', the sentence is not in the passive voice and the verb is left without an object.

Respuesta correcta: D) The work must be finished before Friday.

• A) The work must finished before Friday.Incorrect. In the passive with a modal, 'be' always appears between the modal and the participle.
• B) The work must be finish before Friday.Incorrect. After 'be', the verb takes the participle 'finished', not the base form.
• C) The work is must be finished before Friday.Incorrect. A modal cannot be combined with the present form of the auxiliary 'to be' in that way.
• D) The work must be finished before Friday.Correct. Modals form the passive with 'modal' plus 'be' plus participle.

Respuesta correcta: D) To focus on the action or the result rather than the agent.

• A) To make the sentence shorter in every case.Incorrect. The passive is usually longer than the active, because it adds the auxiliary 'to be'.
• B) To avoid using the past tense.Incorrect. The passive works in all tenses, which is why it exists with both 'was' and 'is'.
• C) To show who performed the action more clearly.Incorrect. Quite the opposite: the passive hides or downplays the agent, while the active emphasises it.
• D) To focus on the action or the result rather than the agent.Correct. The passive highlights the result and lets you omit the agent when it is unimportant or already known.

Respuesta correcta: B) were written

• A) was writtenIncorrect. 'Was' goes with a singular subject, and 'these books' is plural in this sentence.
• B) were writtenCorrect. 'Were written' is the past passive and agrees with the plural subject 'these books'.
• C) are writeIncorrect. After the auxiliary, the verb takes the participle 'written', not the base form 'write'.
• D) have writtenIncorrect. 'Have written' is the active present perfect, not a passive, because it keeps a subject as the agent.

Respuesta correcta: A) was taken

• A) was takenCorrect. The participle of 'to take' is 'taken', and 'was taken' forms the past passive.
• B) was takedIncorrect. Adding -ed to an irregular verb is not correct English, so 'taked' does not exist.
• C) is takenIncorrect. 'Is taken' is the present passive and contradicts the time expression 'yesterday afternoon'.
• D) has takenIncorrect. 'Has taken' is active, but in the passive the subject must be the object of the action.

Respuesta correcta: C) When was the museum opened?

• A) When did the museum opened?Incorrect. 'Did' requires the base form 'open' after the auxiliary, not a participle.
• B) When was the museum open?Incorrect. After 'was', the verb takes the participle 'opened', not the base form 'open'.
• C) When was the museum opened?Correct. In a past passive question, the auxiliary 'was' goes before the subject and the participle comes after it.
• D) When the museum was opened?Incorrect. Question word order requires 'when' to open the sentence and the auxiliary 'was' to follow the subject.

Respuesta correcta: C) Verbs of movement such as 'to go' and 'to arrive'.

• A) Verbs that describe a process, such as 'to build'.Incorrect. Transitive process verbs form the passive normally, as in 'the house was built'.
• B) Verbs whose past participle is irregular, such as 'to take'.Incorrect. An irregular participle does not prevent the passive, and 'was taken' is a completely standard construction.
• C) Verbs of movement such as 'to go' and 'to arrive'.Correct. Intransitive verbs have no object that can become the subject, so they do not form the passive.
• D) Verbs that take the auxiliary 'to be'.Incorrect. Stative verbs like 'to be' or 'to seem' do not form the passive, but not because of an irregular participle.

Respuesta correcta: A) will be announced

• A) will be announcedCorrect. 'Will be announced' is the future passive and fits the future date 'next Friday'.
• B) will announceIncorrect. Without 'be' the sentence is active, and the subject 'the results' does not perform the action.
• C) are announceIncorrect. After 'are', the verb takes the participle 'announced', not the base form 'announce'.
• D) will be announceIncorrect. The passive requires the participle 'announced', not the infinitive form of the verb.

Respuesta correcta: D) isn't opened

• A) doesn't openedIncorrect. 'Doesn't' requires the base form 'open' after the auxiliary, not a participle.
• B) isn't openIncorrect. 'Open' is an adjective or the base form of the verb, but the passive needs the participle 'opened'.
• C) wasn't openedIncorrect. 'Wasn't' is past, but the sentence describes a present routine, so the tense should not change.
• D) isn't openedCorrect. 'Isn't opened' is the negative present passive and describes the center's opening routine.

Respuesta correcta: B) The mural was painted by a group of students.

• A) was painted with a group of studentsIncorrect. 'With' indicates the tool or material used, not the person who did the painting.
• B) The mural was painted by a group of students.Correct. The agent appears after the preposition 'by', which is the standard marker of the passive.
• C) The mural was painted of a group of students.Incorrect. 'Of' does not introduce the passive agent; the correct preposition is 'by'.
• D) The mural was painted by the group students.Incorrect. An article or possessive is missing with 'group'; it should be 'by a group' or 'by the group of students'.

Respuesta correcta: B) To describe the action without emphasizing the person performing it.

• A) To make the instructions shorter and easier to follow.Incorrect. The passive is not necessarily shorter, and it adds the auxiliary 'to be' to each sentence.
• B) To describe the action without emphasizing the person performing it.Correct. In a recipe, the focus is on the process rather than on who carries it out, and the passive reflects that.
• C) To hide important information from the reader.Incorrect. Using the passive is a matter of focus, not of deliberately hiding information.
• D) To use fewer different verb forms in the text.Incorrect. The passive keeps the same number of verb forms as the active; only the auxiliary changes.

Respuesta correcta: D) has been repaired

• A) has repairedIncorrect. Without 'been' the sentence is active, and the subject 'the roof' does not do the repairing.
• B) was repairedIncorrect. 'Was repaired' is the past simple passive and cannot be used with the expression 'since the hurricane'.
• C) has been repairIncorrect. After 'been', the verb takes the participle 'repaired', not the base form 'repair'.
• D) has been repairedCorrect. 'Has been' plus the participle forms the present perfect passive, with 'since' as the time marker.

Respuesta correcta: C) wasn't seen

• A) didn't seeIncorrect. 'Didn't see' is active, and the subject 'the problem' cannot see anyone.
• B) wasn't sawIncorrect. After 'was', the verb takes the participle 'seen', not the irregular past form 'saw'.
• C) wasn't seenCorrect. 'Wasn't seen' is the negative past passive, and 'anyone' appears in the agent clause.
• D) isn't seenIncorrect. 'Isn't seen' is present, but the sentence describes something that already happened at a past meeting.

Respuesta correcta: A) will be built

• A) will be builtCorrect. 'Will be built' is the future passive, and the agent is omitted because it is not yet relevant.
• B) will buildIncorrect. Without 'be' the sentence is active, and the subject does not carry out the construction.
• C) will be buildIncorrect. The future passive requires the participle 'built', not the base form of the verb.
• D) is going to buildIncorrect. That structure is active and expresses a plan, not a passive.

Respuesta correcta: A) Were

• A) WereCorrect. The auxiliary 'were' opens the past passive question, and the main verb stays in the participle form.
• B) DidIncorrect. 'Did' is an active auxiliary and requires the base form 'sign' after it, not a participle.
• C) HaveIncorrect. 'Have' belongs to the present perfect, but the sentence needs the past passive.
• D) WasIncorrect. 'Was' is singular and the subject 'the documents' is plural, so 'were' is the correct form.

Respuesta correcta: D) My cousin wrote the song.

• A) My cousin was written the song.Incorrect. The sentence mixes passive and active: the subject would both do the writing and receive the object.
• B) The song wrote my cousin.Incorrect. It is the correct active form, but with the subject and object roles swapped.
• C) My cousin is writing the song.Incorrect. It is present continuous and does not express a completed past event.
• D) My cousin wrote the song.Correct. Moving the agent back into subject position and the object to the end restores the active form of the sentence.

Respuesta correcta: B) was reported

• A) was reportIncorrect. The passive requires the participle 'reported' after the auxiliary, not the base form 'report'.
• B) was reportedCorrect. 'Was reported' is the past passive and describes the event without emphasizing who reported it.
• C) is reportedIncorrect. 'Is reported' is present and contradicts the expression 'yesterday evening'.
• D) has reportedIncorrect. 'Has reported' is active, and the subject 'the theft' cannot do the reporting.

Respuesta correcta: C) are made

• A) are makeIncorrect. After 'are', the verb takes the participle 'made', not the base form 'make'.
• B) was madeIncorrect. 'Was made' is past, but the sentence describes a general process that still holds true.
• C) are madeCorrect. 'Are made' is the present passive, and 'of wood' indicates the material rather than the agent.
• D) makeIncorrect. Without the auxiliary 'to be' the sentence is active, and 'the chairs' do not do the manufacturing.