Question Detail

Let him do this work.

This work let done by him.
Let this task done be me.
This work let be done by him.
Let this work be done by him.

Answer: Option D

1. Someone has stolen his book.

His book is been stolen.
His book has been stolen.
His book is stolen.
His book has stolen.

Answer: Option B

Explanation:

Apart from Rule to make active voice of Present Perfect Tense, which is

Passive subject + has/have + been + third form of verb + by + passive object

Please also note that words like, "someone", "somebody", "people", "police", "public" etc are dropped. But in rare cases we can use them if sentence meaning is not clear.

2. Sit down.

You are requested to sit down.
You are ordered to site down.
You are told to sit down.
No change.

Answer: Option B

3. Let me do this task.

Let this task be did be me.
Let this task done be me.
Let this task be done be me.
Let this task be do be me.

Answer: Option C

4. He displeased Mr. Mathur.

Mr. Mathur was displeased on him.
Mr. Mathur was displeased for him.
Mr. Mathur was displeased at him.
Mr. Mathur was displeased with him.

Answer: Option D

5. Darjeeling grows tea.

Tea is grown in Darjeeling.
Tea grows in Darjeeling.
Tea is being grown in Darjeeling.
Let the tea be grown in Darjeeling.

Answer: Option A