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2 năm trước
NGƯỜI TA TRỒNG CÂY XUNG QUANH MỘT MẢNH VƯỜN HÌNH VUÔNG CẠNH 32M,SAO CHO MỖI CÂY CÁCH NHAU 2M.SỐ CÂY TRỒNG ĐƯỢC LÀ BAO NHIÊU?
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III. Choose the best answer 31. We should open all the windows, so we don’t_______use air-conditioners. A. have B. have to C. needn’t D. need 33. 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 35. 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 36. We have lived in New York __________ a couple of years. A. in B. since. C. for D. at 37. Our houses will use the sun or the wind_______ electricity. A. to have B. to do C. to make D. to give 38. If we all use______bags, we’ll help the environment. A. new B. cheap C. reusable D. reduced 39. Our dream house will be located _______ the ocean. A. on B. at C. in D. between 40. Don’t________old things because perhaps you will need them later. A. throw B. throw away C. throwing D. throwing away 41. Thu __________ the English club twice a week. A. has gone B. went C. goes D. is going 42. It is a good idea to ________our clothes with our friends or cousins. A. change B. swap C. turn D. send 43. I have been _______ many beautiful places in Viet Nam. A. at B. on C. in D. to 44. If there is a rubbish bin in every class, the classroom will become_______. A. harmful B. lighter C. dirtier D. cleaner 45. In the future, robots will be able to do ....................... things than they do now. A. the most complicated B. the more complicated C. more complicated D. most complicated 46. If we use_______paper, we will save a lot of trees. A. fewer B. less C. more D. much 47. 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 48. If you have old clothes, will you give them to those_______? A. needs B. to need C. for needing D. in need 49. My brother and I will give last year’s clothes to _______instead of throwing them away. A. shop B. people C. charity D. survey 50. “Robots are helping us a lot in industry, education, and in our house” - “________”. A. I agree with you. B. I hope not. C. Do you agree with that? D. What about you? IV. Find and correct the mistakes. 1. We raise funds by collect waste paper and broken glass. A B C D 2. One of the most popular quiz programme on television is called “Who wants to be a Millionaire”. A B C D 3. Until now, I have visited Da Nang third times. A B C D 4. Because of he was sick all day, he couldn’t finish his assignment. A B C D 5. If we keep on using more and more cars, we are going to run out of oil. A B C D 6. Unless he doesn’t help me, I will finish my homework. A B C D 7. John isn’t in class today. I think he might have sick. A B C D 8. I didn’t have a good seat in the theatre, but I couldn’t see the stage very well. A B C D 9. Did your dad took you to watch the football match last week? A B C D 10. Although the arrival of the storm, they couldn’t finish the football match. A B C D

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