VI 1. David had gone home before we arrived. -> After ……………………………………………………………………………………. 2. The light had gone out before we got out of the office. -> When……………………………………………………………………………………. 4. After my father had watered all the plants in the garden , my mother came home. -> Before …………………………………………………………………………… 5. There was a loud noise next to my door last night, so I couldn’t sleep. -> Because............................................................................................................................ 6. Because it rained heavily, the roads are flooded. (due to) ->................................................................................................................................................. 7. Eating too much sugar can result in health problems. (lead to) -> .............................................................................................................................................. 9. The factory is located near our village. There is air pollution and noise pollution. -> If ………………………………………………………………………………………………….. 10.The local people have to use water from the polluted river.They don’t have fresh water. -> If …………………………………………………………………………………………………. 11.People throw rubbish in the street.The street doesn’t look attractive. -> .If....................................................................................................................................................... 12. Tornadoes can move objects as big as a car. → Objects…………………………………… 13. People have played chess for around two thousand years. -> Chess............................................................................................................................. 14. They took residents of flooded villages to a safe place las tnight -> Residents of flooded villages.........................................................................................................

III- Correct form of verbs 1.If we (recycle) ________ more, we will help the Earth. 2. Factories (not dump) ______________waste into rivers if the government fines them heavily. 3. If I were you, I (look) ________________ for a new place to live. 4. If Lan ( not be) _____________ill, she would join out tree planting activity. 5. If people really cared about the environment, they ( not dump ) ________________ waste into the lake. 6. If there was no fresh water in the world, what (happen) ________________. 7. Four countries ……......…………… (visit) by Mr. Brown so far. 8. London ………………… (have) a population of eight million people. 9. Most people (leave)........................before the volcano (erupt)....................... 10. They (spend) ....................the night in the flooded area before help (arrive)....................... 11. Ten new houses (build)............................... in the town every year. 12. They (come) …………….. back home after they (finish) ………………… their work. 13. Before he (go) …………………….. to bed, he (read) ………………………… a novel. IV Read the passage and answer the questions.(1.0 point) Visual pollution has a greater effect on people than you may think. I remember when I went to a big city, I was really scared because so much graffiti on the buildings' wall. Then I looked up, and I saw a lot of power lines over my head. Although they were not dangerous, I still felt unsafe since I thought they might fall down. These things prevented me from enjoying the beautiful sights of the city. I also remember the time when I was a student at a university. Once I was so busy with my assignments that I did not tidy my room for two weeks. Looking at the messy room caused me so much stress that I did not want to study. Then I decided to clean the room and put my thing in their proper places. I also bought a small plants and placed it in a corner of the room. These simple actions increased my motivation and helped me to focus on my learning. Questions. 1.How did the author feel when she saw the power lines? …………………………………………………………………………………………………. 2.Why did she have that feeling? …………………………………………………………………………………………………… 3. What was she busy with? …………………………………………………………………………………………………… 4. What happened when she looked the messy room? …………………………………………………………………………………………………… V. Choose the correct answer for each gap to complete the following passage. Rivers are ____(1) ____ of the world’s most important natural resources. Many cities are on large rivers, and____ (2)____ every country has at least one river that ___(3)___ an important part in the lives of its people. Besides transportation, rivers ___(4)___ food, water for crops, water to drink, and opportunities for recreation for people who live along their ____(5)____. And in order to get water for crops, engineers sometimes build a dam (đập, đê) across a river and let the water become a lake ____(6)____ the dam. Then people can use their water not only to ___(7)___ fields but also to make electricity for homes and industries. ____(8)___, the water often becomes polluted when cities on river banks grow ____(9)____ size and the number of industries increases. We are learning that it is necessary to ____(10)_____ rivers clean if we want to enjoy the benefits of the natural resources. 1. A. one B. ones C. among D. those 2. A. most B. mostly C. almost D. about 3. A. takes B. makes C. occupies D. plays 4. A. supply B. provide C. distribute D. bring 5. A. banks B. shores C. sides D. beaches 6. A. behind B. on C. below D. under 7. A. take B. irrigate C. drain D. give 8. A. Moreover B. Therefore C. Thus D. However 9. A. of B. about C. in D. for 10. A. keep B. get C. hold D. maintain

An và Bình cùng khởi hành từ A đến B trên quãng đường dài 120km. An đi xe máy với vận tốc 45km/h. Bình đi ô tô khởi hành sau Hà 20 phút với vận tốc 60km/h. a) Binhg phải đi mất bao nhiêu thời gian để đuổi kịp An? b) Khi gặp nhau, Bình và An cách B bao nhiêu km

Bài 1 :tìm a ∈ Z a)|A|.5=10 b)|A|=0 c)|A|=-3 d)|A|=|-5| e)-11.|A|=-22 Bài 2 : tìm x,y thuộc Z BIẾT a) (x-3).(2y+1)=7 b) (2x+1).(3y-2)=-55 giải hộ mình với

tính hợp lí 27 × 85 + 9 × 15 × 3

REVISION FOR UNIT 7,8,9 – Class 8 ( NEW) I. Choose the word which has a different sound in the part underlined. (0,5pt) 1. A. examinee B. historic C. scientific 2. A. medical B. hospital C. pollution 3. A. classic B. nature C. degree 4. A,. national B. physical C. arrival 5. A. tornado B. historic C. injury II: Choose the best answer A, B, C, or D 1. Scientists say that exhaust fumes are............. our city. A. poisoning B. poisonous C. poison) 2. Many seabirds were ..........................because of the oil spill. (die/ death/ dead ) 3. Waste from households will gradually ............................. the lake (contaminate/ contamination/ contaminated) 4. Trees can’t grow here because the soil is too ......................... (pollute/ polluted/ pollution) 5. That fierce storm left behind badly......................... buildings. (damage/ damaged/ damaging) 6. What’s a ......................? It’s a substance that contaminates something. (pollute/ polluted/ pollutant) 7. Don’t drink that water. It’s __________. A.damaged B.dumped C.contaminated 8. The team’s success was largely __________ to her efforts. A.because B.due C.since 9. By the time we got to the cinema, the film __________. A.started B.had started C.starting 10. All our English teachers are __________ speakers. A.native B.original C.foreign 11. If you __________ the president, what would you do to help the environment? A.are B .had been C .were 12. Eating too much sugar can __________ to health problems. A.cause B.lead C.make 13. The heavy rain has caused __________ in many parts of the country. A.storms B.floods C.drought 14. The Maori in New Zealand greet each other by _____ their noses. A.punching B.touching C.blowing 15. If the factory ___ dumping poison into the lake, all the fish and other aquatic animals will die. A. continues B. continued C. will continue 16. _______ has made the fish die. A. Water pollution B. thermal pollution C.noise pollution 17. If the air wasn’t dirty, I ________ so much. A. wouldn’t sneeze B. sneeze C. would sneeze 18 .If you _____ the president, what would you do to help the environment ?A.are B. will be C.were 19. Air___, together with littering, is causing many problems in our cities today. A. pollute B. pollution C. polluting 20. If we __ water carefully, more people will have fresh water. A. use B. would use C. using 21. A severe tropical____ is called a typhoon. A. drought B. rain C. storm 22. Noise pollution can lead to________loss. A. looking B. hearing C. listening 23. If I________a millionaire now, I________travel around the world. But in fact, I am very poor and have no money. A. were/ would B. am/ will C. were/ will 24. Emergency teams are still clearing up the ____ from the plane crash. A.debris B.dust C.piece 25............is a sudden, violent shaking og the earth’s surface A. drought B. flood C. earthquake 26. ........ is a long period when there is no rain and not enough water for people, animals and plants A. A. drought B. flood C. earthquake 27. Many people died in the accident. - .................... A. That’s great B. That’s a relief! C. Oh no!

Ôn tập thời khóa khứ đơn: ghi cách dùng công thức. Đặt 5 câu với động từ tobe. 5 câu với động từ thường sau đó chuyển sang thể phủ định và nghi vấn

Em có nx j về kì trung gian của tế bào phôi sớm ????? Helppp meeee ! Cần gấp lắm ạ

Bài văn:nhớ rừng của thế lữ Thể thơ:là gì ? Mn giúp mik vs ạk

cho nửa đường tròn (O) đường kính AB . các điểm C và D thuộc cung AB sao cho sđ CD=90, C thuộc cung AD. Gọi E là giao điểm của AC và BD, K là giao điểm của AD và BC 1. Tính số đo CED 2. ECKD là tứ giác nội tiếp 3. OD là tiếp tuyến của đường tròn ngoại tiếp tứ giác EDCK