Question

Who writes a letter?
(Change into passive voice)​

Answer 1

Answer:

a letter is being written by whom

Explanation:

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Answer 2

The passive voice of the sentence: 'who writes a letter?' is 'by whom is a letter written?'.

• The given sentence is the active voice from the present indefinite tense.
• The rule to convert the interrogative sentence starting with 'who' is 'by whom + is/am/are + object + the third form of the verb + other words +?'.
• In the sentences starting with 'who', the subject may remain absent.
• In this case, the object is 'a letter' which is singular and the verb is 'write'.