Question Detail

My father has solved this matter.

This matter have been solved by my father.
This matter is solved by my father.
This matter has been solved by my father.
This matter had been solved by my father.

Answer: Option C

Explanation:

Note : Rule to make active voice of Present Perfect Tense :

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

1. They are not playing the game.

The game has not being played by them.
The game is not being played by them.
The game is being not played by them.
The game has being not played by them.

Answer: Option B

2. He found the student guilty.

The student was found to be guilty by him.
The student was found guilty by him.
The student was found to guilty by him.
The student found to be guilty by him.

Answer: Option A

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.

4. Where do they buy the utensils ?

Where did the utensils bought ?
Where was the utensils bought ?
Where are the utensils bought ?
Where were the utensils bought ?

Answer: Option C

Explanation:

It can also be :
Where are the utensils bought by them ?

5. Thief killed him.

He was kill by the thief.
He killed by the thief.
He was killed by the thief.
He was killed.

Answer: Option C