31. I, who ____ your teacher, will try my best to help you with your English.

　　 A. is　　　　　　　 B. are　　　　　　 C. be　　　　　　　　 D. am

30. All that can be done _______.

　　 A. has been done　 B. has done　　 C. have done　　　 D. were done

29. The man couldn’t _____the fact that the lost watch was found in his house.

　　 A. explain for　 B. account for　　 C. amount to　　　　　 D. refer to

28. Towards _______evening, ________ cold rain began to fall down.

　　 A. an; a　　　　 　　B./ ; a　　　　　　　 C. the; the　　　　　　 D. the; a

27．Whether life will continue on the earth for millions of years ______will depend on ____this problem can be solved.

　 A. to come; if　 B. coming; if　 C. to come; whether　 D. coming; whether

26．We expressed the hope________ they would come and visit our hometown again.

　　 A. which　　　　　 B. that　　　　　　　 C. why　　　　　　 D. how

25. Charlie Chaplin was loved by all who watched the film for his determination _____

overcoming difficulties.

　　 A. to　　　　　　　 B. with　　　　　　 C. in　　　　　　　 D. on

24．Although I can walk about, there is still a ____ pain in my leg.

　　 A. weak　　　　　 B. soft　　　　　　 C. strong　　　　　 D. slight

23．In ______, the northerners are keen on dumplings while the southerners are fond of rice.

　　 A. common　　　　 B. total　　　　　　 C. general　　 　　　D. particular

22．______ is obvious ______he has finished his work.

　　 A. What; that　　　 B. That; that　　　　 C. It; that　　　　　 D. It; what