III. Choose the best answer. 1. The air in the city _________ with traffic fumes. A. is heavy polluted B. is polluted heavy C. is heavily polluted D. polluted heavily 2. _________ it’s raining again, we’ll have to stay at home. A. While B. Although C. As D. Unless 3. ‘What time should Eric start to work?’ I suggest _________ here about 7:30.’ A. he should be B. he must be C. him be D. him to be 4. Carrier bags can be _________ as bin bags around the house. A. recycled B. reproduced C. repacked D. reused 5. We leave early _________ miss the last bus. A. in order not B. so as not C. in order to D. in order not to 6. When you’re learning English, use it, _________ you’ll lose it. A. and B. but C. or D. however 7. If you go doing that, you’ll end _________ in serious trouble. A. up - with B. on - up C. off - with D. out - up 8. They are trying to save the animals _________ extinction. A. on B. to C. from D. for 9. They didn’t see each other again _________ the fall. A. since B. in C. from D. until 10. _________ air is one of the many problems we have to solve. A. Pure B. Polluted C. Fresh D. Pleasant 11. People have this beach _________ with a lot of trash. A. spoiled B. cleaned C. collected D. protected 12. He got a _________ for parking on double yellow lines. A. fee B. ticket C. fine D. token 13. By sticking labels over the address you can _________ envelopes. A. recycle B. reduce C. reuse D. return 14. Hundreds of people were made _________ after the flood. A. homeless B. helpless C. careless D. endless 15. Our school _________ at the end of May. Then I will have a long holiday. A. would break up B. is breaking up C. broke up D. breaks up