20. The students had the lights ___________ for almost three hours.

A. to burn　　 　　 B. burning　　 　　　　 C. burnt　　　 　　　　　　 D. to be burning

19. “Do you have any clothes _______ today, Master?” asked the servant politely.

　　 A. to wash　 　　 B. to be washed　　　 　　 C. washing　 　　　　 D. being washed

18. _________ it is to have a cold drink on such a hot day!

　　 A. What a fun　　 　　 B. How fun　 　　　　 C. What fun 　　　　 D. How a fun

17. Some birds fly ______in winter and some stay in the north.

A. south 　　B. the south 　 C. in the south 　 　　D. to south

16．I don’t think math　　　　　 .

　　　 A．easily to be learned　 　　　　　　　 B．easily to learn

　　　 C．easy to be learning　 　　　　　　　　 D．easy to learn

15.To her surprise, the life she had been looking forward to ________ to be unpleasant.　

A. prove　　　　　 B. being proved　　　 C. proving　　　　　 D. proved

14. --- How often do you eat out?

--- _________, but usually once a week.

　　 A. It depends　　 　　 B. Have no idea　　　 　　 C. As usual 　　　　 D. Generally speaking

13. --- Got your driving license?

--- No. I ______ too busy to have enough practice, so I didn’t take the driving test last week.

　　 A. was　 　　　　 B. have been　 　　　　 C. had been　　 　　　 　　　D. am

12．-Want to have a drink ?

　　 -No,　　　　 .

　　　 A．I would rather not to　 B．I would rather not　 C．I’d better not to　 D．I’d better not