1. We shouldn’t throw trash___ the water A.up B.onto C.in D.at 2. if we plant more trees, we___ Reduce amount of pollution in the atmosphere A. Reduce B. Reduced C. Will reduce D. Would reduce 3. ___means a piece of land full of rubbish. A. Junk-yard B. Treasure. C. Hedge. D. Stream. 4. We should make our world___ A. Unpolluted. B. Polluted. C. Pollution. D. Unpollution. 5. “He suggested fixing the dripping faucet” “___” A. We will. B. Good idea. C. Yes please. D. I’m afraid not. 6. Don’t forgot___ off the gas stove before going out A. Turn. B. Turning. C. To turn. D. Turned 7. We’d better get___ to make sure there are no cracks in the pipes A. A plumber B. A mechanic. C. An electrician D. A consumer. 8. In winter, heating___ for 50 percent of our electricity bill A. Takes. B. Occupies C. Costs D. Account. 9. Scientists are looking for an___ way to reduce energy consumption A. Effect. B. Effection C. Effective. D. Effectively.