Question

who wrote the letter voice cचेंज
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Answer 1

Answer:

By whom the letter was written?

Explanation:

Question:

Who wrote the letter?

Answer:

By whom the letter was written?

*In the Active voice the subject is the "doer"

*In the Passive voice the subject is the "sufferer"

*While changing a sentence from active to passive voice,we have to add a "be"

form verb and the past participle of the main verb should be used in the passive form.

*So the answer is,

By whom the letter was written?