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থিম নির্বাচন

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”

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

Explanation: