I. Choose the best answer to complete each of the following sentences 1. This shopping bag is not ________ so I can buy it. A. cheap B. simple C. expensive D. green 2. ________ materials are good for our environment. A. Expensive B.Natural C.Polluted D.Fresh 3. Sewage from the factories is the main cause of ________ in this river. A. Soil pollution B. Air pollution C. Water pollution D. Noise pollution 4. Reusable bags are better ________ for the environment than ones. A. plastic B.rubbish C.shopping D.paper 5. I turned off the fan to __________ electricity. A. reuse B. save C.recycle D. reduce 6. My father switched the light ________ off before he changed the . A. dish B.refillable pen C.water bottle D.bulb 7. You should __________ things that can be recycled in a recycling bin. A. put B.wrap C.decorate D. swap 8. Most books and notebooks are made of _____________. A. plastic B.wood C.paper D. rubber 9. They __________ empty cans so that they can use the metal. A. recycle B.reduce C.swap D. reuse 10. You should give your old clothes to those ___________ . A. for fun B.for good C.in use D. in need 11. If we recycle waste paper, we ____________ less trees. A. will cut B.should cut C.won't cut D. must cut 12. Daisy will become 'greener' if she ___________ refillable pencils. A. use B.uses C.will use D .used 13. What will you do if ___________ someone throwing trash on the street? A. you can see B. you will see C.you see D.you saw 14. If we _________ more plants, we __________soil pollution. A. will grow/ reduce B. grew/ will reduce C. grow/ will reduce D. are growing/ will reduce Helppppppppppppppppppppp me!!!!!!!!. Mik sẽ cho ctlhn ạ