A. fell　　B. fall　　C. falling　　D. to fall

　　25.I am sorry to hear that you resorted ________ .

　　A. to cheat　　B. to cheating　　C. cheating　　D. cheat

　　26.He wasn’t asked to take on the chairmanship of the society, ________  insufficiently popular with all members.

　　A. being considered　　B. considering.

　　C. to be considered　　D. having considered

　　27．The article opens and closes with descriptions of two news reports, each ________ one major point in contrast with the other.

　　A. make　　　　　　B. made　　　　　　C. is　　to　　make　　　　D. making

　　28. All flights ________  because of the snowstorm, we decided to take the train.

　　A. were canceled　　　　B. had been canceled

　　C. having canceled　　　D. having been canceled

　　参考答案：

　　1-5　　BBCCD　　　　　6-10　BCCBB　　　　11-15　CBCCD　　16-20　DBAAA

　　21-25　ACABB　　　　　26-28　ADD