23.Wisdom usually _____ learning and hard work often ______ success.

A. lies in; leads in 　　　　　　　　　　　　 B. leads to; lies in

C. lies in; leads to　　　　　　　　 　　　　 D. lies to; leads to

22. Listen! She seems _____ in the next room.

A. to sing 　　　　　 B. to be singing　 　　 C. to have sung　 　　 D. singing

21.The boy was seen _____ in the examination and was punished by the teacher.

A. having cheated　 B. cheated　　　 　　 C. cheating　　　　 　 D. cheat

20. I don’t think it is ______ to happen.

A. perhaps　　　　 B. probably　　　 　　 C. likely　　　 　　　 D. possibly

19. The struggle lasted for four years _____ the North won in the end.

A. since 　　　　　 B. before 　　　　　　 C. while 　　　　　 D. after

18. E-mail, as well as telephones, ______ an important part in daily communication.

A. are playing 　　　 B. is playing 　　　　　 C. have played　 　　　 D play

17. He sent me an E-mail, _____ to get further information.

A. hoped　　　　　 B. hoping　　　 　　　　 C. to hope 　　　　　 D. hope

16. The film is very _____. All the students are ______ in it.

A. interesting; interesting 　　　　　　　　　 B. interested; interested

C. interesting; interested 　　　　　　　　　 D. interested; interesting

15. Cleaning women in big cities usually get ______ by the hour.

A. pay 　　　　　　B. paying　　 　　　　 C. paid　　　　　　　　　　　 D. to pay

14._____ such heavy pollution already, it may now be too late to clean up the river.

A. Having suffered 　　　　　　　　　　　　　　　　 B. Suffering　　

C. To suffer 　　　　　　　　　　　　　　　　　　 D. Suffered