24. Can you explain　　 most deserts are located near the west coast of the continents? (福建省厦门市2010届高中毕业班质量检查)

A. why is it that　　　　　　　　 B. why it is that

C. how it is that　　　　　　　　 D. how is it that

23. Though　　　　 to go to bed many times, the little boy just turned a deaf ear and fixed his eyes on the cartoons.　　 　(福建省厦门市2010届高中毕业班质量检查)

A. urging　　　　　　 B. being urged　　　　　　 C. urged　　　　 D. having urged

22. When first　　　　 to the market, the computer software was not a success due to its complexity in operation.　　　　　　 　　　(2009·上海市高三第一次五联考)

A. introducing　　　　　　　　　　 B. being introduced

C. introduced　　　　　　　　　　　 D. to be introduced

21. 　　　　　by keeping down costs will Power Data hold its advantage over other companies.　　　　　　　　　　　　　 (上海市东昌中学2010届高三上学期期中测试)

A. Only　　　　　　　 B. Just　　　　　　 C. Still　　　　　　　　　　 D. Yet

20. -How was the weather then?

-Hardly 　　　　　off the plane，when it started to rain.

(2009·山东威海高三质量调研)

A.I had stepped　 　　　　　　　B.had I stepped

C.I stepped　　　 　　　　　　　　D.did I step

19. Only under special circumstances 　　　　to take make-up tests.

(2008·05·山师大附中高三统考)

A. are freshmen permitted

B. permitted are freshmen

C. freshmen are permitted

D. are permitted freshmen?

18. According to the law, it is　　 get your license. (2008·山师大附中高三统考)

A. not until you’re eighteen can you

B. until you’re eighteen that you can’t

C. not until you?re eighteen that you can

D. until you’re eighteen when you can’t

17. Through a telescope　　　　 　the surface of the Mars when it comes nearer to the earth. 　　　　　　　　　　　　　　　　　　　　　　　(2009年山东省高考模拟考试)

A. can one observe　 　B. one can observe　 C. can observe one　 　D. observe one can

16. -So you have met Maria?

-Yes, it was last week　　　 　we attended Jack’s party.(山东济南市高三英语试题)

A. where　　　　　 B. when　　　　　　　 C. that　　　　　　 D. why

15. It was 　　　　　he came back from Africa that year 　　　　　he met the girl he would like to marry.　　　　　　　　　　　　　　　　　　　　　　 (2009·江西)

A. when; then 　　　　　B. not; until　　　 C. not until; that　 D. only; when