Question Detail

Who wrote this book ?

By whom is this book written ?
By whom was this book written ?
By who was this book written ?
By whom were this book written ?

Answer: Option B

1. He does not fly kites.

Kites are not flows by him .
Kites does not flows by him .
Kites were not flows by him .
Kites was not flows by him .
Kites is not flows by him .

Answer: Option A

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. The police will have caught the culprit.

The culprit will have caught by the police.
The culprit have been caught by the police.
The culprit will have been caught by the police.
The culprit would have been caught by the police.

Answer: Option C

Explanation:

Note :- Rule to make active voice of Future Perfect Tense :

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

4. 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.