Passive form of "Who has done the work?" is--
A Whom has done the work by?
B Who has been done the work?
C By whom has been done the work?
D By whom has the work been done?
Solution
Correct Answer: Option D
Who যুক্ত active voice কে passive voice এ রুপান্তর করার নিয়ম- Who এর পরিবর্তে By whom/ To whom/ With whom / at whom + tense ও person অনুযায়ী Auxiliary verb + object এর subjective form + অনেক সময় tense অনুযায়ী কর্তার পরে be/ being/ been বসাতে হয় + verb এর past participle form.