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

Vẽ anime line, màu Digi/ tradi Digi thì bắt buộc OC, tradi thì chép hay OC đều được

không nhất thiết phải phân biệt ra hết đâu ạ, trên 5 cái là đc

Chiếu một tia sáng SI lên một gương phẳng a Vẽ tia phản xạ b Vẽ 1 vị trí đặt gương để thu được tia phản xạ theo phương nằm ngang từ trái sang phải

giúp mình với, mấy cái này mình nghĩ tra mạng là ra á, cơ mà mình lười=<<<<

Từ đồng nghĩa với từ bình thường

có bao nhiêu giá trị nguyên âm m để y= $\frac{3}{4}$$x^{4}$-(3m-1)$x^{2}$-$\frac{1}{4x^{4}}$ nghịch biến trên (0;+vc)

Giúp mình câu a,b vs ạ. Mình đang rất gấp . Mình hứa sẽ tym và vote 5*đầy đủ ạ

Giúp em bài này với ạ Em cảm ơn anh chị nhiều

Làm hộ mình với đc hem ọ :D Chỉ còn mỗi 10đ nên giúp mik nhó~