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Unit 8 We’re trying to save the earth! 单元测试卷 一、选择题(每空1分,共15分) 1. —How can we improve our school environment? —Well, _ easiest way to make _ difference is not to drop litter. A. an;a B. an;the C. the;a D. the;the 2. I really hope you can use your own _ to help the local people. A. advantages B. disadvantages C. advantageous D. advantaged 3. The engineer thought up a very special way to put the used soda cans to good _. A. useful B. useless C. use D. used 4. —Why don't you buy the computer? —It's too expensive. I can't _ it. A.cost B.afford C.pay D.spend 5. It _ him half an hour to do the work. A. spent B. took C. paid D. lent 6. —Dad, must we wait until the light becomes green? —Yes, we _.That's the traffic rule. A.can B.may C.have to D.need 7. My teacher often says that mistakes should _ in time. A.correct B.be correcting C.have corrected D.be corrected 8. I _ sleep very well, but then I started doing yoga and it really helps. A.didn't use to B.used to C.was used to D.wasn't used to 9. —Hi, Wang Ning! How's the weather in Heze now? —It is terrible. It _ all the morning. A. rains B. is raining C. rained D. rain 10. Why not consider _ abroad in five years? A. study B. to study C. studied D. studying 11. More and more people have realized that the ancient buildings in cities shouldn't _. A. pull down B. be pulled down C. put down D. be put down 12. All the students took part _ the discussion about how to put our time _ good use yesterday. A. at;in B. at;to C. in;to D. in;at 13. We'd better use _ materials in order to protect the environment. A.ugly B.wooden C.plastic D.reusable 14. At school, we are taught _ knowledge _ how to behave well. A. neither; nor B. either; or C. not only; but also D. not; but 15. —To help protect the environment,I think riding a bike is a good idea. —_. But it's difficult to stop driving cars. A. I don't think so B. I'm afraid not C. I agree with you D. Not really 二、完形填空(每空1分,共10分) Do you often run outdoors to keep healthy? Have you ever tho