Choose the correct answers. 6. If people can wastes, they will save a lot of money. A.reuse B.reduce C.rebuild D.use 7. new technology, we now have super smart TVs, smart phones. A.Because B.Because of C.Thanks D.Thanks to 8. Robots will do most of the housework, we will have more time for our family. A. so B.but C.although D. if 9. We should have recycling bins in each classroom for things. A. use B.reuse C.reused D.reusable 10. If we plant more trees, the will be greener. A.neighbour B. soil C. air D.neighbourhood 11. All of the machines will have a special card . A.start B.to start C.starting D.to starting 12. If we all the trees, there will be no more oxygen for us to breathe. A.cuts B.cut off C.cutting D.cut down 13. We should open all the windows, so we don't use air-conditioners. A.have B.have to C.needn't D.need 14. Plantmore trees in the schoolyard because they will provide shade and the atmosphere fresher. A. do B. make C. have D. use 15. Our dream house will use only solar energy so that we can make the clean and green. A.nature B.environment C.kitchen D.home 16. Many products are now helping you your energy bills. A. reduce B.reuse C.recycle D.cut down 17. It takes a lot of energy to keep food cool, so don't the fridge door open or putting hot things inside. A. make B. have C. leave D. stop 18. Future houses will have hi-tech rooms for all of the family members. A. read B. to read C. reading D. to reading 19. Our houses will use the sun or the wind electricity. A. to have B. to do C. to make D. to give 20. In the future, cars might use energy from . A. gas B. water C. oil D.power 21. Our dream house will be located the sea. A. on B. at C. in D.between 22. Don't old things because perhaps you will need them later. A. throw B. throw away C. throwing D.throwing away 23. causes many breathing problems. A. Fresh air B. Fresher air C. Polluting air D.Polluted air 24. We won't use CD players because we will have smart watches that music. A. play B. plays C. hear D. listen to 25. If you eat fast food, you will be fatter easily. A. very B. very much C. too much D. most Hộ mk vs ah , trc 7h40 nha , chỉ cần đáp án thôi