1. The new pupils were told where to sit.

Quá khứ đơn : S + was/were + P2

2. I knew that he had been told of the meeting.

Quá khứ hoàn thành : S + had + been + P2

3. I have never been treated with such kindness.

Hiện tại hoàn thành : S + have/has + been + P2

4. This story isn't believed

Hiện tại đơn : S + am/is/are + P2

5. The dam may be broken by a sudden increase in water pressure

Động từ khuyết thiếu : S + ĐTKT + be + P2

6. Books borrowed from the library must be taken good care of.
Động từ khuyết thiếu : S + ĐTKT + be + P2
7. I was told about it by a man I know.

Quá khứ đơn : S + was/were + P2

8. He can never be found at home for he is always on the move.

Động từ khuyết thiếu : S + ĐTKT + be + P2

9. Milk is used for making butter and cheese.
Hiện tại đơn : S + am/is/are + P2