Active-Passive voice Questions and Answers

Answer: D

Correct answer: It is time for the bell to be rung

It is time to ring the bell has an active infinitive; its passive counterpart is for the bell to be rung, which introduces the thing acted on with for. For the bell to ring is active again, and to be ring uses the base form where the participle belongs.

Answer: B

Correct answer: By whom are you taught English ?

The tense stays present simple, so the passive is are taught. The interrogative subject who becomes by whom, and the question order puts the auxiliary first. Teach has two objects and it is the person that becomes the subject, leaving English in place.

Answer: C

Correct answer: This matter should be looked into by you

Look into is a prepositional verb, so into stays with the participle. Must becomes should in the passive of an obligation, and the options with has been and may change an obligation into a completed act or a permission.

Answer: D

Correct answer: By whom is this mess being created?

Three things must hold at once: the tense stays present continuous, so the passive is is being created; the interrogative subject who becomes the agent by whom; and because it is a question the auxiliary comes before the subject. Only the keyed option does all three.

Answer: D

Correct answer: A house is being built by them next door to our school

The present continuous becomes is being built, and next door to our school tells where the building is happening, so it belongs with the verb. Putting it immediately after a house makes it describe the house rather than the building work.

Answer: D

Correct answer: I was told by somebody that there had been an explosion in the town hall

Only the main verb changes: told me becomes I was told. The reported clause there had been an explosion is untouched, which is why the options that shift it to was or drop the agent alter more than the voice.

Answer: C

Correct answer: It was expected by the Romans that they would conquer Carthage

Expect here is followed by an infinitive whose subject is the same as the main subject, so the passive needs the anticipatory it and a that clause. Making Carthage the subject changes who was expecting whom, and the Romans were expected reverses it entirely.

Answer: A

Correct answer: Quebec was surrendered by the French to the English in 1759.

The object Quebec becomes the subject and the French the agent. English keeps the agent phrase next to the verb, so by the French precedes to the English; the option that reverses them separates the verb from its agent.

Answer: D

Correct answer: I was struck on the head by a stone

The object me becomes the subject and a stone the agent. On the head tells where I was struck, so it stays with the verb; putting by a stone before it separates the verb from the place it acted on. Making my head the subject changes what was struck.

Answer: B

Correct answer: The Independence day was celebrated by the residents

Celebrated is past simple, so the passive is was celebrated. The present and present perfect options change when it happened, and the last turns the verb into a noun, which is not a change of voice at all.