1.we are talking is a famous.... 

2.the road on we are driving was built in... 

3.the chair suddenly collapsed when i was sitting on 

4.the office where Graham took us to, was filled with... 

5.i met a lot of people in.... that i cant remember their name 

6.George is the person who.... Gave the cake to 

7.they ask about the.... whose picture we are looking at 

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

9. The book, which im looking for was send by my father. 

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

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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.