“Who can do it?” বাক্যটির Passive form হবে–
By whom it can be done
By whom can it be do
By whom can it be done
By whom can it be did
Explanation:
Correct Answer is: By whom can it be done
Who যুক্ত বাক্যকে Passive form করার সময় বাক্যের শুরুতে By whom + Auxiliary Verb + Subject + be + Verb এর Past Participle বসে।