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