Who will do the work? (Make it passive)

Active Voice: Who will do the work?
Passive Voice: By whom will the work be done?

• Who যুক্ত প্রশ্নবোধক বাক্যের passive করার নিয়ম:
- By whom + Auxiliary (tense অনুযায়ী) + sub + verb এর past participle + ?
- দুটি auxiliary থাকলে একটি subject এর আগে, অপরটি পরে বসে।

More Example:
Active Voice: Who has broken the glass?
Passive Voice: By whom has the glass been broken?

Source: A passage to the English Language by S.M. Zakir Hussain.