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আপনার পছন্দের থিম বেছে নিন।

Who has done the work? The correct passive form of the sentence is-

A. Who is the work done by?

B. The work has done by whom’?

C. By whom has the work done?’

D. By whom has the work been done”

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সঠিক উত্তরঃ D. By whom has the work been done”

Explanation: