Question Detail

Switch on the cooler.

Let cooler be switch on.
Switch on the cooler please.
Let cooler be switched on.
Let the cooler be switched on.

Answer: Option D

1. Ajay spoke the truth.

The truth were spoken by Ajay.
The truth was spoken by Ajay.
The truth was spoke by Ajay.
The truth are spoken by Ajay.
The truth is spoken by Ajay.

Answer: Option B

2. Rahul mush have done that task.

That task must had been done by Rahul.
That task must have been done by Rahul.
That task must have done by Rahul.
That task must have been did by Rahul.

Answer: Option B

3. He arrived at the conclusion.

The conclusion was arrived at by him.
The conclusion arrived at by him.
The conclusion had arrived at by him.
The conclusion have arrived at by him.

Answer: Option A

4. He is making a film.

A film is made by him.
A film had being made by him.
A film is being made by him.
A film has being made by him.

Answer: Option C

Explanation:

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

Passive subject + is/are/am + being + third form of verb + by + passive object

5. I must help him.

He must helped by me.
I must held him.
He must get help from me.
He must be helped by me.

Answer: Option D

Explanation:

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

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

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