=>

I/

1. C

2. A ( Người -> Who) 

3. B ( the streets -> which) 

4. B

5. D

6. B

7. A

8. B ( giới từ + which) 

9. C

10. A

II/

1. He worked for a woman who used to be an artist. 

2. We broke a car which belonged to my uncle.  

3. Ba dropped a cup which was new. 

4. Nam loves books which have happy endings. 

5. The woman who is from India works in a hospital. 

6. My sister who lives in Japan has four sons. 

7. The phone which belongs to An is on the table. 

8. The TV which was my grandfather's got broken. 

9. The radio which was bought 35 years ago. 

10. I know the woman who lives upstairs.