Question Detail

Turn her out.

Let her be turned in.
Let his be turned out.
Let her be turned out.
Let her turned out.
Let her be turn out.

Answer: Option C

1. Who wrote this noble ?

By whom has been this noble written ?
By whom had this noble written ?
By whom was this noble written ?
By whom this noble was written ?

Answer: Option C

2. Turn her out.

Let her be turned in.
Let his be turned out.
Let her be turned out.
Let her turned out.
Let her be turn out.

Answer: Option C

3. He helps me.

I am helped.
I am being helped.
I am helped by him.
He helped by me.
I am being helped by him.

Answer: Option C

4. It is time to do our business.

It is time for our business to be done.
It is time to our business to be done.
It is time our business to be done.
It is time for our business be done.

Answer: Option A

Explanation:

Note: Please note the use of "for"

5. 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.