1/ A
2/ A
3/ B
4/ C
5/ C
6/ A
7/ A
8/ A
9/ C
10/ B
11/ A
12/ B
13/ B
14/ C
Ex2:
1. The student who sits next to me is from China.
2. I thanked the man who had helped me.
3. The professor whose course I am taking is excellent.
4. I recently went back to Paris which is still as beautiful as a pearl.
5. Nam knows the man whom we talked to this morning.
6. The house where my grandfather used to live is very old.
7. We stayed in a hotel which was very expensive.
8. The man whose son we play with every day is an architect.
9. She's riding on the elephant that was carried from India.
10. Trinh Cong Son composed aongs which are greatly liked by millions of Vietnamese people.
11. The engineers who designed the building received an award.
12. The students who live in that dormitory are from Australia .
13. The bicycle which has only a wheel often used at the circus.
14. My best friend who see me every day always has something new to tell me.
15. Her house which in excellent repair is over two hundred years old.