20．-Haven’t I told you that I like the beef well done?

-Yes, but I 　　　it longer than I usually do.

　　　 A．was cooking　　　　 B．will cook　　　　　　 C．had cooked　　　　　　 D．cooked

19. Mrs. Murphy had an accident　　　　 to work and was badly injured.

　　　 A．driving　　　　　　　 B．to drive　　　　　　　 C．driven　　　　　　　　　　 D．drove

18．As is natural , a man as old as he ______ be very forgetful.　 　 A. need 　　B. should 　　C. would 　　D. must

17．It was difficult to keep a positive attitude when I had a list filled with things to do, _____ none sounded like fun.

　　 A. for which　 　　B. to which　　 　　C. of which　　 　　D. from which

16．-Are you pleased with his work?

　 　一Of course．It couldn’t be　　　　　 　.　　　　　

　　 A．any worse　　 　B．any better　　 　　　C．the best　　　　 D．so bad

15. Only when they were told of the importance of time _____ wasting time is like wasting part of their lives.

　　　 A. those boys realized　　　　　　　　　　　　　　　　　　　 B. those boys had realized

　　　 C. had those boys realized　　　　　　　　　　　　　　　　 D. did those boys realize

14．At about nine o’clock in the morning, the students reached　　　　 the locals called Great Evergreen Island.

　　　 A．what　　　　　　　　　 B．that　　　　　　　　　　 C．where　　　　　　　　　　 D．which

13． Written in a hurry,　　　　　　 . How can it be satisfactory?

　　　 A．they found many mistakes in the report　 　B．Sam made lots of mistakes in the report

　　　 C．there are plenty of mistakes in the report　　 D．the report is full of mistakes