Question

Change into passive voice :- 1) which house did they paint?

Answer 1

Which house was be painted by them.

In the passive voice sentence, the noun or noun phrase can be found as the object of a corresponding active sentence and the same object can use used as the main subject or clues of in the passive voice.

This is a grammatical voice that can be used to remove the question marks and you can covert an active voice sentence into passive voice sentences.

Answer 2

Answer: which door was painted by them

Explanation: