15为农村包围城市理论的创立奠定了基础的思想是()

21. The movie we saw last night was very different ( ) the novel.

20. ( ) the heavy snow last night, none of the classes have been cancelled at the university.

19. ( ) fun and exercise, swimming is a very useful skill.

18. Tom has been ( ) the telephone for two hours.

17. The airport is five miles ( ) .

16. To say that someone＇s work is not good is to find fault ( ) it .

15. I am disappointed with the new officers elected in our club, but there is no point ( ) about it.

14. "Edward was terribly impolite to Miss Smith.""Yes, he should be ( ) himself."

13. Who is responsible ( ) the arrangements?

12. I＇m rather anxious ( ) her , for I haven＇t heard from her for a long time.