20. Last summer, they traveled to many places of______________(interesting) in n China.

19. The students talked so______________(excite) that they forgot the time for class.

18. What’s in your hand? The book_______________(buy) yesterday.

17. We mustn’t hurt the________________(protect) animals.

16. We should help each other, because everyone needs______________ (other) help.

15. It _____________(seem)_______________(rain) soon.

14. Eddie hopes_________________(become) a businessman when he____________(grow) up.

13. Thank you for________________(operate) on them.

12. Doctors say__________________(prevent) is better than cure.

11. I read an _______________(advertise) for the camera in the newspaper just now.