20. - Do you enjoy the English course ?

　- _______.Sometimes I find grammar is a bit hard to understand.

A .Of course　 　　　　 B. Not quite　 　　　　 C. Not likely　 　　　　 D. Not a little

19.The basketball team has been doing well this season, so they ______ win the championship.

A. should 　　　　　　　 B. might　　　　　　 　 C. would 　　　　　　 D. could

18. That cats can survive falls from great heights is ______ by many facts.

A. supported 　　 　　　　B. tested　　　　 　　　 　 C. explained　 　　　　 D. believed

17. Mr. Liu always reminds us to go over carefully after the test paper is finished, which would ________result in careless mistakes.　

A. therefore　　　 　　　　 　　　 B. somehow　　 　　　 　 C. otherwise　 　　 　　　 D. meanwhile

16. We hope some adjustments to the quality of their service will be made________ the reactions of the customers. k*s*5*u

A．in return for 　　　　 B．in charge of　　 　　 C．in favor of　　　 　　 　　　 D．in response to

15. He had driven ______ ten miles when his race car broke down and he was soon behind the other competitors.　

A. farther than　　 　　　　　 B. no farther than　 　　C. longer than 　　　　 D. no longer than