12. We will save a lot of trees if we__________ waste paper.​​​​
A. repeat​​​B. recycle​​C. rewrite​​D. remake
13. We should use reusable shopping bags plastic bags. ​​​
​​A. instead of​​​B. in spite of​​C. because of ​​D. place of
​​14. If she__________ work hard for the exam, she will fail the exam.​​​
A. is​​​​B. don’t​​C. doesn’t​​D. isn’t​​
15. These three Rs__________ reduce, reuse, and recycle​​​​
A. stand up​​​B. mean for​​C. ask for​​D. stand for
16. We can reuse__________. It is good for our environment. L
A. water​​​B. air​​​C. noise​​D. bottles
17. Polluted water can make fish__________.
A. live​​​​B. sleep​​C. die​​​D. grow
18. If the air is__________ , people will suffer from breathing problems.
A. unpolluted​​​B. polluted​​C. clean​​D. fresh
19. We are very tired with the__________ pollution from the factories in this area.
A. noisy ​​​B. noiseful ​​C. noise​​D. noisily
20. In the future, robots will care of the children and do all the housework.
A. do​​​​B. bring​​C. make​​D. take
21. “What about going to the cinema?” "__________"​​​​
A. Sound great.​​B. No, I don’t like.​C. Yes, I can.​​D. I hope so
22."Let's plant some trees in our school." - "__________"
A. That's a good idea​​​​​B. Yes, please.
C. No, thanks.​​​​​​D. Yes, I would.