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1. ___is a chemical used for killing insects A.Pollution B.Dynamite C.Pesticide D.Deforestation 2. Electricity, gas and water are not luxurious but___ A.wonderful B.cheap C.necessities D.enormous 3. You should clear___all the trash on the ground before leaving A.over B.out C.off D.up 4. “How about making posters on energy saving and hanging them around our school?” “___” A.Don’t litter! B.go away! C.Great! Let’s do that! D.Nonsense! 5. I’m disappointed___people have spoiled this area A.if B.that C.how D.and 6. I think we should___lazy students from throwing trash by putting garbage bins around the school yard A.provide B.prevent C.disappointed D.reduce 7. My shoes are dirty. I’d better take them___before I come in A.away B.up C.on D.off 8. If he is a student, he___a discount A.are B.will get C.were D.will be 9. They didn’t understand the matter;___, they didn’t ask for help A.but B.however C.moreover D.and 10. If you want to save money, you should___the amount of water your family uses A.increase B.repair C.book D.reduce 11. We must learn about keeping the environment___ (pollute) 12. He always works___. We’re glad (effect) 13. ___is now a serious problem in many countries (forest) 14. These___will save money as well as conserving the Earth’s resources (innovate) 15. Companies now realize that___want products which work effectively and save money (consume) 16. We offer a fast, ___and friendly service (efficiency)


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