Choose the correct answers. of trees. 11. If we-…waste paper, we will save a lot of trees.A. repeat B. recycle C. rewrite D. remake 12. If we pla

Choose the correct answers. of trees.
11. If we…….waste paper, we will save a lot of trees.A. repeat B. recycle C. rewrite D. remake
12. If we plant more trees in the schoolyard, the school will become a………..place.
A. greener B. darker C. dirtier D. more polluted
13. “Why do you often forget to……….the lights when you go out of the classroom?”
A. turn on B. turn off C. close D. shut down
14. “What can we do ………..air pollution?”
A. reduce B. to reduce C. reducing D. to reducing
15. You can save money while shopping by only buying………you need.
A. what B. it C. this D. that
16. “Reduce, reuse, recycle” is said to encourage people to waste less, by using less and using things again, in order to……….the environment .
A. harm B. damage C. pollute D. protect
17. Please collect all the recyclable materials, and take them to the………..factory.
A. recycle B. recycled C. recyclable D. recycling
18. This newspaper is made of…………..paper.A. recycle B. recycled C. old D. waste
19. If we all use bags, we’ll help the environment.A. new B. cheap C. reusable D. reduced
20. These three Rs……… reduce, reuse, and recycle A. stand up B. stand for C. ask for D. means
21. If there is a rubbish bin in every class, the classroom will become .
A. harmful B. lighter C. dirtier D. cleaner
22. “Don’t throw rubbish into the river because you will make it…………”
A. greener B. dirty C. cleaner D. fresher
23. If we use………..paper, we will save a lot of trees.A. fewer B. less C. more D. much
24. You should put the food in a reusable box ………….. plastic bag.
A. by B. instead of C. because of D. without
25.If people turn off all electric appliances in one hour all over the world, they can save lots of………….
A. electric B. electrical C. electrician D. electricity
26. It is a good idea to …………our clothes with our friends or cousins.
A. change B. swap C. turn D. send
27. Next week our class is having a discussion about finding…………ways to reuse old items before throwing them away. A. interested B. surprising C. useless D. creative
28. If you have old clothes, will you give them to those………….?
A. needs B. to need C. for needing D. in need
29. My brother and I will give last year’s clothes to………..instead of throwing them away.
A. shop B. people C. charity D survey.
30. “Do you think we should put a…………bin in every classroom in order to keep it clean?”
A. reusable B. recycled C. recycling D. recyclable