Multiple choice

Directions: Change the voice of the given sentence.

Who turned the key in the lock?

  1. By whom was the key turned in the lock?

  2. By whom the key was turned in the lock?

  3. By whom in the lock the key was turned?

  4. By whom had the key been turned in the lock?
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Case of past indefinite. While changing the voice of a sentence from active to passive, we interchange the respective postions of the subject and the object.  Moreover, we use the past participle form of the verb. The object in passive voice is generally preceded by 'by'. Considering this, option 1 is the correct answer.

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