I. Circle the best option( A,B or C ) to fill in the bank. 1. If we plant more tree, the air...............be so polluted. A. do B. will C. won't 2. We shouldn't...................rubbish on the road. A. reuse B. throw C. reduce 3. Wireless TV might help us..............TV programs from space. A. watch B. wash C. order 4. ...........year, we will stay in a villa on the Moon. A. Next B. Last C. Ago 5. We will live in...............in the future. A. robot B. space C. helicopter 6. What types of house do you like? A. I like TV B. I don't have a house C. I love skyscraper 7. We are in 3Rs club. It stands for Reduce - Reuse - ................. A. Renamed B. Repeated C. Recycled 8. Hoa: "Do you want our school will be greener ?" Lan : "........................" A. So do I B. Yes, of course C. I love green 9. If you.................under water, you.....................a lot of fishes. A. live - will see B. will live - see C. live - see 10. Turn...............the lights before you going out. A. off B. on C. up Nhanh = ctlhn