Question Detail

My mother is cooking food.

Food is being cooked by my mother.
Food has been cooked by my mother.
Food was being cooked by my mother.
Food is being cook by my mother.

Answer: Option A

1. Who taught you English ?

By who were you taught English.
By which were you taught English.
By whom you were taught English ?
By whom were you taught English ?

Answer: Option D

2. They are not picking the flowers.

The flowers are being picked by them.
The flowers is not being picked by them.
The flowers was not being picked by them.
The flowers are not been picked by them.
The flowers are not being picked by them.

Answer: Option E

3. 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

4. Respect your neighbours.

Your neighbours should respected.
Your neighbours should be respected.
Let neighbours be respected.
Let neighbours respected.

Answer: Option B

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.