I. Choose the best answer (A, B, C or D) to complete each of the following sentences. 1. We should use reusable water bottles………………..plastic ones. A. because B. instead of C. despite D. however 2. Walking to school will help ……………. air pollution. A. refill B. reuse C. recycle D. reduce 3. One of the bad things about…………..is that it can make fish die. A. noise pollution B. soil pollution C. water pollution D. air pollution 4. We should go to school by bike to ……………the energy. A. save B. protect C. pollute D. spray 5. Don’t forget to……………..the lights when going out! A. turn on B. turn off C. close D. shut down 6. What can we do……………….air pollution? A. reduce B. to reduce C. reducing D. to reducing 7. These three Rs …………..reduce, reuse, and recycle. A. stand up B. means C. stand for D. ask for 8. It is a good idea to……………..our clothes with our friends or cousins. A. change B. turn C. send D. swap 9. If we use……………….papers, we will save a lot of trees. A. less B. fewer C. more D. much 10. If we all use……………….bags, we’ll help the environment. A. new B. cheap C. reusable D. reduced