9. This is the room which food is kept.

8. He left me the book, that is very useful for me.

7. I know the reason that she looks so worried.

6. We shall visit the college where his father teaches there.

5. The house stands at the place that the two roads meet.

4. The days when we spent together cannot be easily forgotten.

3. China is the country where he spent the best part of his life.

2. Egypt is a country where is famous for its pyramids.

1. He told us about the countries where he had visited.

20、He built a telescope 　　　　　　　　　　 　he could study the skies.

　　　 A．by it　　　　 B．through which　　　　 C．with that　　　　　 D．in which