Question Detail

Switch on the light.

Let the light be switch on.
Let the light should be switched on.
Let the light will be switched on.
Let the light be switched on.
Let the light switched on.

Answer: Option D

1. Bring the bottle of juice.

Let a bottle of juice be brought.
Let bottle of juice be brought.
Let a bottle of juice brought.
Let a bottle of juice be bring.

Answer: Option A

2. Nobody can catch him.

He can not be caught.
He can not caught.
He could not be cought.
He could not cought.

Answer: Option A

3. We hate him.

He has hated by us.
He is hated by us.
He was hated by us.
He will hated by us.

Answer: Option B

4. 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.