Giúp e vs ạ ,e cảm ơn mn nhìu

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1. The man about whom we are talking is a famous scientist. 

2. The road on which we are driving was built in 1980.

3. The chair on which I was sitting suddenly collapsed. 

4. The office to which Graham took us was filled with books. 

5. I met a lot of new people  at the party whose names I can't remember. 

6. George is the person to whom Michiko gave the cake. 

7. They ask about the athletes of whom we are looking at the picture. 

8. Ann, who lives next door, is very friendly. 

9. The book which my father sent me yesterday is the one I'm looking for. 

10. Jack, whose car had broken down, had to take a bus.