单项填空(共15小题;每小题1分，满分15分)
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
21. Last month I traveled across the Sahara Desert by ______ camel with some locals. What _____ amazing experience!
A. the; an B. a; / C. /; the D. /; an 22. He is always full of _______ as if he never knows tiredness.
A. energy B. force C. spirit D. strength 23. He said to me with an _________ look on his face. A. excite B. exciting C. excitement
D. excited
24. When ______ properly, a reward system can help to increase students’ effort, attention and improve their behavior.
A. used B. to use C. using D. having used 25. ________ he is into the video game, it’s hard for him to think of anything else — all his attention is on winning the game.
A. Unless B. Whether C. Once D. Where 26.——I don’t know how to deal with my son. He always refuses ________ advice I give him.
——He just wants to show he has grown up, maybe.
A. no matter what B. whatever C. no matter which D. whichever 27. The manager promised to keep me ________ of how our business was going on before I made up my mind to take a few days off.
A. to be informed B. inform C. informed D. informing 28. Shangrila, a place of mystery and beauty, is indeed a heavenly world ________ people live in perfect harmony with nature.
A. that B. which C. when D. where 29. —— Have you finished all your homework?
—— Of course. I ________ it before I went out to play football.
A. had finished B. have finished C. finished D. was finishing
30. Mary suggested that the problem worth paying attention _____at the meeting. A. being discussed B.to been discussed C. to be discussed D. be discussed 31. ________ is well known to us all is ________ Yao Ming has become the boss of the Shanghai Sharks, who attended the opening ceremony of the new CBA season on Dec. 19, 2009.
A. What; that B. What; what C. As; that D. It; that.
32. —— Would you be kind enough to help me clean the lab at 4 o’clock this afternoon?
—— I would like to, but I ________listening practice then.
A. will do B. have been doing C. am doing D. will be doing 33. You should take the medicine ________, that is, three times a day, or it won’t work on you.
A. properly B. regularly C. exactly D. actually
34. Tom, as well as his classmates, ________ publicly for their bravery action in time of danger.
A. were praised B. was praised C. have praised D. has praised 35.——What is the book mainly about?
——Well, it ________ a little boy who suffered a lot during the war. A. makes up B. deals about C.deals with D. talk about
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