I. Choose the best answer to complete each of the following sentences. 1. If people ______ public transport, there will be less pollution. A. use B. will use C. can use D. used 2. ______we miss the last bus, we will have to walk home. A. As B. When C. If D. Unless 3. People have ________this beach with a lot of trash. A. spoiled B. cleaned C. collected D. protected 4. He got a ________ for packing on double yellow lines. A. fee B. ticket C. fine D. token 5. By sticking labels over the address you can _______. envelopes. A. recycle B. reduce C. reuse D. return 6. Because plastic bags are very hard to ________, they will cause pollution. A. dissolve B. wrap C. tear D. collect 7. These materials can be _____ into other packaging products. A. reused B. reduced C. removed D. recycled 8. If we _______waste paper, we will save a lot of trees. A. repeat B. recycle C. rewrite D. remake 9. If we plant more trees in the schoolyard, the school will become a_____ place. A. greener B. darker C. dirtier D. more polluted 10. Why do you often forget to_______ the lights when you go out of the classroom? A. reduce B. turn off C. close D. shut down 11. What can we do ____ air pollution? A. reduce B. to reduce C. reducing D. to reducing 12. You can save money while shopping by only buying _______ you need. A. what B. a C. this D. that 13. Please collect all recyclable materials, and take them to the ______. factory. A. recycle B. recycled C. recyclable D. recycling 14. This newspaper is made of _______paper. A. recycle B. recycled C. old D. waste 15. If we all use _______ bags, well help the environment. A. new B. cheap C. reusable D. reduced 16. These three Rs _________ reduce, reuse and recycle. A. stand up B. stand for C. ask for D. means 17. If there is a rubbish bin in every class, the classroom will become ______. A. harmful B. lighter C. dirtier D. cleaner 18. Dont throw rubbish into the river because you will make it _________ A. greener B. dirty C. cleaner D. fresher 19. If we use ________ paper, we will save a lot of trees. A. fewer B. less C. more D. much 20. I __________ you if you need my help. A. am helping B. could help C. will help D. helped 21. If someone into the store, smile and say, May I help you? A. comes B. came C. will come D. would come 22. If you ______all of my questions, I______ anything to help you. A. dont answer / cant do B. didnt answer/ wont do C. wouldnt answer/ cant do D. wouldnt answer/ couldnt do 23. Heres my phone number. - Thanks, I_____ you a call if I _____some help. A. will give / will need B. would give/ needed C. give/need D. will give/ need 24. The teacher was absent today, so the class was canceled. If she_____ absent again tomorrow, class _____tomorrow, too. A. is / will cancel B. is/ will be canceled C. was / would be canceled D. was/ would cancel 25. I wont lend you this money you promise to pay it back. A. in case B. if C. otherwise D. unless 26. _____there are some more ideas, we can end the meeting now. A. Unless B. If C. As if D. In case 27. Its really raining.Yes. If the weather______, well have to camp somewhere else. A. would get worse B. might get worse C. gets worse D. should get worse 28. If anyone _______him I ______ back at 9 oclock. A. calls / tell / will be B. called / telling / would be C. is calling / tells / am D. will call / to tell / am 29. If she asks for money, I her. A. will give B. gave C. would give D. would have given 30. If I _______this exam, Ill go to the university next summer. A. pass B. to pass C. had passed D. passed