1. Emergency teams are still clearing up the __________ from the plane crash. A.debris B.dust C.pieceD.waste 2. Thousands of buildings and houses were completely destroyed when the earthquake __________ the city. A. fought B. struck C. happened D. arrived 3. The Maori in New Zealand greet each other by __________ their noses. A.punching B.touching C.blowing D.shaking 4 .If you __________ the president, what would you do to help the environment ? A.are B.had been C.were D.was 5. Singapore is famous for its __________ and green trees. A. cleanliness B. cleanly C. cleaning D. clean 6. Air___________, together with littering, is causing many problems in our cities today. A. pollute B. pollution C. polluting D. polluted 7. If we ______________ water carefully, more people will have fresh water. A. will use B. would use C. using D. use 8. A severe tropical___________ is called a typhoon. A. drought B. rain C. flood D. storm 9. Have you taken notice …..the “stop” sign. A. at B. of C. to D. from 10.The Statue of Liberty is a major monument in New York which ……..freedom A. attracts B. symbolises C. decide D. understand

x+1 4 1-x ___ - ____ = ____ x-1 x²-1 x+1

giúp cam khoanh bua, khoanh bua spam

The disposal of ................. sewage in rivers and oceans leads to water pollution, (treat) Cutting down trees causes a lot of.................... damage, (environment) There is a link between exposure to .................. and cancer, (radiate) Water pollution can be caused by..................... substances from factories, (poison) Giúp mình với, mình đang cần gấp. Hứa vote 5 sao ạ

vua lê, chúa trịnh có chính sách như thế nào đối với công tác thủy lợi khai hoang?

a) 3 phần 5 của 80 b) 0,4 của 50 c) 4/3 của 50 d) 5vaf 3 \ 2 của 5\7 mét

Mình đang cần gấp, ai làm được mình vote 5 sao! Xin cảm ơn rất nhiều.

Trong xi lanh của một động cơ đốt trong hỗn hợp khí ở áp suất 1atm,nhiệt độ 47ºC ,có thể tích 40 dm3 .Nếu nén hỗn hợp khí đến thể tích 5 dm3 ,áp suất 15atm thì nhiệt độ của khí sau khí nén là bao nhiêu ? Giúp mình với

Giải dùm mình bài 1 thôi Cảm ơn các ban j nhiều

1. If I ……….a lot of money now, I …………..a new car. a. have /will buy b. have / would buy c. had/ will buy d. had/ would buy. 2. If I ……………you, I …………….do that. a. am/ will b. were /would c. were/ will d. had been/ would. 3. If I were offered the job, I think I ………. it. a. take b. will take c. would take d. would have taken. 4. I would be very surprised if he…………….. a. refuses b. refused c. had refused d. would refuse. 5. Many people would be out of work if that factory………..down. a. closes b. had closed c. closed d. would close. 6. 6. If she sold her car, she ………… much money. a. gets b. would get c. will get d. would have got. 7. They would be disappointed if we……………. a. hadn’t come b. wouldn’t come c. don’t come d. didn’t come. 8. We ‘ll get wet if we ………….out. a. go b. b. did go c. went d. had gone. 9. If I go shopping, I ………some food. a. buy b. will buy c. would buy d. would have bought. 10. If I find it, I ………you. a. will tell b. would tell c. had told d. told 11. If I had known you were in hospital, I …………to see you. a. will go b. would go c. went d. would have gone. 12. If I …………him, I would have said hello to him. a. had seen b. see c. saw d. would see 13. I…………..out if I hadn’t been so tired. a. will go b. went c. would have gone d. would go 14. If I ………..a camera, I would have taken some pictures. a. have b. had c. would have d. had had 15. You won’t pass the examination……………you study more. a. as long as b. unless c. if d. whether 16. It would have been a good crop ............ through. a. if the storm didn't sweep b. would a storm not have swept c. had a storm not swept d. didn't a storm sweep 17. If I ................. the competition, I ............. on a world cruise. a. win/ will go b. had won/ would have gone c. won/ would go d. won/ would have gone 18. If someone…………in here with a gun, I would be very frightened. a. would walk b. walks c. had walked d. walked. 19. What would happen if you ……………..to work tomorrow? a. don’t go b. didn’t go c. won’t go d. wouldn’t go