III. Choose the best answer(6ms) 7. …………… air is one of the many problems we have to solve. A. Pure B. Polluted C. Dust D. Pleasant 8. I’ll be in trouble if I……………._my passport. A. lose B. will lose C. lost D. would lose 9. If it is raining this evening, I………………_________. A. will go out B. don’t go out C. go out D. won’t go out 10. Minh’s English is excellent. He speaks…………………..________. A. perfectly English B. English perfectly C. perfect English D.English perfect 11. I’m disappointed ………………people have spoiled this area. A that B. when C. if D. how 12. He ……………….to find a job but he had no luck. A. hardly tried B. hard tried C. tried hardly D. tried hard 13. We couldn’t go on a picnic as planned …………………. it was raining. A. however B. but C. because D. so 14. If he ………………hard today, can he have a holiday tomorrow? A. works B. will work C. worked D. would work 15. ………………….we were tired, we sat down beside the stream. A. Because of B. If C. As D. And 16.If you don’t study hard , you ………… the exam . A. failed B.will fail C.fail D. have failed 17. Solar energy doesn’t cause………………….. A. pollution B. polluted C. pollute D. pollutant 18. Are you looking forward………………… my letter ? A. to see B. to seeing C. saw D. seeing 19. “ ………………..” means a piece of land full of rubbish. A. junkyard B. treasure C. hedge D. stream 21. I’ll have to buy a map …………….. I don’t know this area. A. if B. because C. when D. because of 22. Unless you understand. I…………….explain it again to you A. am B. was C. will. D. would 23.How about…………….. dinner with us on Sunday ? A.to have B.have C. have had D. having 24.Would you like ……………….. to a party on Saturday ? A.come B.coming C. to come D. will come 25. He shouted and looked ………..At me and angry when I broke the vase. A. angry B. angrier C. angrily D.angried 26. He is tired _..................... he stays up late watching TV. A. so B. because C. but D.although 27……………we go on littering , the environment will become seriously polluted . A. And B.But C.So D.If 28.She is tired _.........................she stayed up late watching TV . A.as B.but C.so D.and 29.Tuan sighed …………..when he heard that he failed the test . A .sad B.sadly C.more sad D.sadlier 30.I can’t make all of my own meals …………………. I am not good at cooking. A.as B.since C.because D.A,B,C are correct