17.[2013四川]4. Read this story, ________ you will realize that not everything can be bought with money.

A. or　　　　　　　　 B. and　　　　　　　　 C. but　　　　　　 D. so

16.[2013北京]22. Don’t turn off the computer before closing all programs　 　　 　you could have problems

A. or 　　 B. and　　 C. but　　 D. so

15.[2013安徽]23.It’s much easier to make friends　　　 　you have similar interests.

A. unless　　　　　　　　 B.　 when　　　　　　 C. even though　　　　　　 D. so that

14.[2013重庆]25.　　 we have enough evidence, we can't win the case.

A. Once　　 B As long as　　　 C. Unless　　　　　 D. Since

13.[2013浙江]19. There are some health problems that, when ______ in time, can become bigger ones later on.

A. not treated　　 B. not being treated　　 C. not to be treated　　 D. not have been treated

12.[2013天津]5.　　　　 　small, the company has about 1,000 buyers in over 30 countries.

A. As　　　　　　 B. If　　　　　　　　 C. Although　　　　 D. Once

11.[2013四川]7.He was so busy. He cannot afford enough time with his son _____ he wants to.

A. even if　　 B. as if　　 C. because　 D. before

10.[2013陕西]18. I have heard a lot of good things about you 　　　　I came back from abroad.

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

9.[2013山东]28. _________I have to give a speech, I get extremely nervous before I start. A. Whatever　　　　　　 B. Whenever　　　　　 C. Whoever 　　　　 　D. However

8.[2013山东]26. Mark needs to learn Chinese _______ his company is opening a branch in Beijing. A. unless　　　　　 B. until 　 C. although　　　　　　　　　 D. since