Question Detail

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

1. I have given him a perfume.

A perfume have been given to him by me.
A perfume has been given to him by me.
A perfume had been given to him by me.
A perfume was given to him by me.

Answer: Option B

2. He was writing a love letter.

A love letter had being written by him.
A love letter being written by him.
A love letter was written by him.
A love letter was being written by him.

Answer: Option D

Explanation:

Note :- Rule to make active voice of Past Continuous Tense :

Passive subject + was/were + being + third form of verb + by + passive object

3. We must have obeyed our teachers.

Our teachers might have obeyed.
Our teachers might have been obeyed.
Our teachers must have been obeyed.
Our teachers must have obeyed.

Answer: Option C

Explanation:

If we have "Subject + Modal Auxiliary verb + have + third verb + object"
then we change it to

Passive subject + Modal Auxiliary verb + have been + third form + by + passive object.

Modal Auxiliary verb are : can, could, shall, will, may, might, should, would, must, ought to etc.