25. They ______ the train to Beijing. Otherwise, they would have returned home.

A. need have caught 　　B. must have caught　 C. must catch 　　D. may catch

24. His father was the first on the farm ______ against the slave owner.

A. fought 　　　　　B. fighting 　　　　　　C. to fight 　　　　D. having fought

23. As we all know, eating too much fat can ______ heart disease and cause high blood pressure.

A. add to 　　　　　B. attend to 　　　　　C. contribute to 　　D. apply to

22. I am so tired. _____ I could take the day off tomorrow.

　 A. Only if　　　　　　　　　　　　 B. If only　　　　　　　　　　　　　　　 C. Only too　　　 D. What if

21.We should help people in difficulty _____ their color and nationality.

　 A. in spite of　　　　　　　　　 B. regardless of　　　　　　　　 C. in regard to 　　　　 D. despite

20.Who would you rather ____ with you to the cinema?

　 A. have go 　　　　　　　　　　 B. have to go　　　　　　　　　　　 C. love to go　　　　　　　 D. like to go

19. Since the economic crisis, most of the American people　 have______ their living expenses.

　 A. cut up　　　　　　　　 　　 B. cut down　　　　　　　　　　　　 C. cut off　　　　　　　　　　 D. cut in

18._______ I admit the problem is very serious, I don’t think it can’t be solved.

　 A. While　　　　　　　　　　　　　 B. When　　　　　　　　　　　　　　　 C. As　　　　　　　　　　　　　　 D. Because

17. We have planted a lot of trees to _____ wind and sand in the desert.

　 A. hold up　　　　　　　　　　　 B. hold down　　　　　　　　　　　 C. hold back　　　　　　　 D. hold out

16. I was laid off last month so ______ I borrowed some money in my life

　 A. first time　　　　　 　　　 B. for the first time　　　　　 C. the first time　　　　 D. by the first time