5. A plane is a machine can fly.

4. The house in that we live is very small.

3. The person to who you spoke is a student of Grade Two.

2. This is the watch for that Tom is looking.

1. This is the factory where we visited last week.

20. The boy standing there is my brother.

19. The woman is talking to our teacher. She is my mother.

18. The students deserved to fail the exam. They didn’t study hard.

17. The sweater is worth 90 yuan. I like it.

16. The pen is mine. He took it away by mistake.