The correct passive of: `Who can do it`?
By whom can it be do?
By whom can it be did?
By whom can it be done?
By whom could it be done?
Explanation:
Correct Answer is: By whom can it be done?

By whom can it be do?
By whom can it be did?
By whom can it be done?
By whom could it be done?
Correct Answer is: By whom can it be done?

Remove শব্দটির Noun- Option A: Remove , Option B: Removal , Option C: Re-movement, Option D: Removing, correct answer is: Removal
`Call me if you have any problems regarding your work`. Here `regarding` is a/an- Option A: gerund , Option B: apposition , Option C: preposition, Option D: conjunction, correct answer is: preposition
The noun form of `repeat` is_____. Option A: repeatation , Option B: repeatasion , Option C: repetision, Option D: repetition, correct answer is: repetition
Which one of the following is not a noun? Option A: Loneliness , Option B: Childhood , Option C: Purity, Option D: Fairly, correct answer is: Fairly
Which one is the verb form of the word, `Popular`? Option A: Popularite , Option B: Population , Option C: Popularize, Option D: Populate, correct answer is: Popularize