Question

Who has killed the snake? Change into passive voice​

Answer 1

Answer:

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Who has killed the snake?

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By whom has the snake been killed?

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Answer 2

Answer:

The given sentence is in the form of active voice. Therefore when we change it to passive voice we have to ensure that the subject in this is being acted upon unlike in active voice. Hence the sentence who killed a snake will be changed to a snake has been killed by whom.