15. Taiwan, that we know, belongs to China.　　　

14. That was the reason because she looked old.　

13. Those at the desk want to buy tickets write down your names.

12. The reason which he explained it sounds reasonable.

11. We heard the news which our team won the game.　

10. Soon they came to a farm house, and in front of which sat a small boy.

9. This is the last time when I’ve given you lessons.　

8. I don’t like the way which you talked to your friend.

7. Those that haven’t been to the West Lake will gather at the school gate.

6. I’m going to work in the hospital where needs me.