Choose the correct passive voice transformation of the sentence:
The new intern had forgotten to lock the laboratory door before leaving.
Show answer & explanation
Correct answer: B
Explanation
To transform a sentence from active to passive voice, the object of the active sentence becomes the subject of the passive sentence, and the tense of the verb must be maintained using a form of 'to be' followed by the past participle.
The active sentence ('The new intern had forgotten to lock...') is in the Past Perfect Tense.
For the Past Perfect tense, the passive structure is: had been + past participle.