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Ⅱ.单项选择(共15小题;每小题1分,满分15分)
21. For your own ____, please don't swim in the sea.
A. feelings B. safety C. purpose
22. We' re going to have the graduation ceremony ____ next month.
A./ B. in C. on
23. ____ room looks very much clean.
A. Bob and Dave's B. Bob's and Dave's C. Bob's and Dave
24.—Oh, God!I've forgotten to bring bread.
— Don't worry. You can have some of ____. We' ve gôt enough here.
A.us B. ours C. our
25.— Why do people there ____ use umbrellas in the sun?
—Because they would rather enjoy the sunshine.
A. hardly B. sometimes C. often
26. ____ exciting news!I can't wait to see those old classmates.
A. How B. What C. What an
27.—I like the city____ is beautiful and peaceful. ——So do I.
A. which B. where C. what
28 Work hard and be patient, ____ your dream won't come true.
A. and B. so C. or
29.—Here are two backpacks. Which one do you want?
—I want the ____one because I don't have too many things to put in.
A. smaller B. bigger C. smallest
30.I first met Lisa three years ago when we ____ at a radio station together.
A. have worked B. were working C. had worked
31.—Must I come here before 6:30 tomorrow? — ____. There will be plenty of time.
A. No, you mustn't B. No, you can't C. No, you needn't
32. The teachers always tell us ____ in the river. It's too dangerous.
A. not swim B. don't swim C. not to swim
33. David, please ____ your dictionary from the schoolbag and look up the new word.
A. take off B. take away C. take out
34.— Summer vacation is coming! Have you decided ____ ?
—Yes. To Kunming. I hear that it has p