11. Diana was reading Harry Potter and the Goblet of Fire, completely in the mysterious work

　　A. being lost B. having lost C. losing D. lost

12. If I had known you weren't coming, I a cake.

　　A. would not bake B. did not bake

　　C. will not have baked D. would not have baked

13. Staying in a four-star hotel for a night costs renting a house in the suburb for a month.

　　A. twice as much as B. twice more C. as much as twice D. as much twice as

14. In winter, traffic accidents occur on the highway.

　　A. frequently B. suddenly C. usually D. rapidly

15. Only when I began to do it that I had made a mistake.

　　A. I realized B. I had realized C. did I realize D. would I realize

16. It was three weeks later he heard the news.

　　A. which B. that C. after D. when

17. He live in a remote and underdeveloped country than in this modem but noisy city.

　　A. prefers to B. likes to C. had better D. would rather

18. __ , Sam knows lots of things about philosophy.

　　A. As he is young B. As young he is

　　C. Young as is he D. Young as he is

19. Today the energy problem becomes critical. It ______ an immediate solution.

　　A. calls on B. calls for C. calls up D. calls at

20. Dr. Zhang was always __ the poor and the sick, his private clinic often providing them with free medical care.

　　A. tended by B. absorbed in C. concerned about D. reminded of