Question Detail

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.

1. Sahil spoke the lie.

The lie was spoke by Sahil.
The lie spoken by Sahil.
Lie was spoken by Sahil.
The lie was spoken by Sahil.

Answer: Option D

2. Rahul made her laugh.

She had made to laugh by Rahul.
She was made for laugh by Rahul.
She was made to laugh by Rahul.
She was made laugh by Rahul.

Answer: Option C

Explanation:

Note : Please note "made to laugh"

3. Sunder will have closed the door.

The door would have closed by Sunder.
The door would have been closed by Sunder.
The door will have been closed by Sunder.
The door will have closed by Sunder.

Answer: Option C

4. We help the poor.

The poor is helped by us.
The poor are helped by we.
The poor are help by us.
The poor are helped by us..
The poor was helped by us.

Answer: Option D

5. He asked me what my post was.

I get asked what my post was.
I could asked what my post was.
I was asked what my post was.
I had asked what my post was.

Answer: Option C