Question

who has built this house ? change into passive voice​

Answer 1

The correct answer is The house will have been built by them

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Answer 2

By whom has this house been built?

In the provided question, the sentence that is in active voice, needs to be changed to passive voice.

While changing a sentence from active to passive voice, the following changes should be made-

• The usage and placement of the word 'by' is very important.
• Usually, 'by' is placed at the end of the statement, right before the subject.
• However, in this case the word should be written in the initial part of the sentence.
• This is generally done when it's an interrogative sentence.
• Also, we should be careful not to change the meaning of the sentence while changing it's voice.