24.　 　　　　　this is only a small town, it?s crowded with tourists who come here all year round.　　　　　　　　　　　 (上海市东昌中学2010届高三上学期期中测试)

A. Since　　　　 B. Unless　　　　 C. Once　　　　　　　 D. Although

23. True friendship is like sound health. The value of it is seldom known 　　　　it is lost.　　　　　　　　　　　　　　　　 (上海市东昌中学2010届高三上学期测试)

A. when　　　　　 B. until 　　　　C. though　　　　　　 D. since

22. 　　　　　　　bad the situation seems, I know for certain that Ann, my best friend, stands by me.

A. Though　　　 B. No matter　　　 C. Even if　　　　　　 D. However

21. 　　　　　　her mother had come, her face lit up.

A. Hearing　 B. Having heard　　 C. When hearing　　　　 D. When she heard

20. -I hear Alice was badly injured in the accident and sent to hospital.

-　　　　 , we should go and see her immediately. (2009·青岛高三模拟)

A. If so 　　B. When necessary　 　C. On condition that　 D. Believe it or not

19. 　　　　　　　he lives in a large flat and owns much money, he doesn’t seem as happy as before.　　　　　　　　　　　　　　　　 　　　　　(2009·青岛高三模拟)

A. While　　　　　 B. Whether　　　 C. Unless　　　 D. Before

18. -How long do you think it will be　　　 　China sends another manned spaceship to the moon?

-Perhaps two or three years.　　　　　　　　　　 (2008-2009徐州市六县一区联考)

A.when　　　　　 B.until　　　　　 C.that　　　　 　　　　D.before

17. -Our holiday cost a lot of money.

-Did it? Well, that doesn’t matter　　　　　 　you enjoyed yourselves.

(2009·临沂市高三二模)

A. even if　　　　 B. in case　　　　 C. as far as　　　 D. as long as

16.　 Mr. Morgan appears very cheerful in public, he is actually leading a very unhappy life. 　　　　　　　　　　　　　　　　　　　(2009·兖州市高三高考仿真)

A. How　 　　　　　　B. While　　　　 　C. As　　　　　　 　D. Since

15. A good teacher always leaves his students enough time to think and voice their opinions in class，　　　 sometimes he may not complete his teaching task.

　　　　　　　　　　　　　　　　　　　　　　　　　　 (2009·山东烟台高三适应性)

A.even if　　 　　　B.in case　　 　　C.as long as　 　　　D.as if