Change the following from active to passive voice: The tourists had taken many photographs.

Many photographs have been taken by the tourists.
Many photographs are taken by the tourists.
Many photographs had been taken by the tourists.
Many photographs were being taken by the tourists.

Correct answer: Many photographs had been taken by the tourists.

Solution

In active voice, the subject performs the action on the object. To change to passive voice, the object becomes the subject and the verb changes to the passive form while retaining the same tense. Since the sentence is in past perfect, the correct passive form is "had been taken."

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