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. Let us sing.

It is suggested, we should sing.
It is suggested to sing.
It is suggested that we could sing.
It is suggested that we should sing.

Answer: Option D

2. I do not teach her.

She is not taught by me.
She was not taught by me.
She not taught by me.
She is not taught by i.
She is taught by me.

Answer: Option A

3. He Stole my book.

My book was stolen by him.
My book was been stolen by him.
My book were stolen by him.
My book are stolen by him.
My book is stolen by him.

Answer: Option A

4. 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.