20. -I think you should phone Jenny and say sorry to her.

　　 - 　　　　　　. It was her fault.

　　 A．No chance　　　　　　 B．Not possible　　　　 C． No way　　　　　　 　　 D．Not at all

19. -Did you visit the National Stadium last week?

-I should have, but an old friend of mine _____.

　 　 A. drops in　　　　 　　 B. dropped in　　 C. had dropped in　　 　 D. has dropped in

18. It’s said that an American starts a speech with a joke,______ a Japanese seldom.

A. as　 　　　　　　　　 B. when　　　　 　 C. though　　　　　 　　　　 D. while

17. The teacher called Tom to his office because he was caught _____in the exam.

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