1 mảnh sân chơi hình chữ nhật có chiều dài là 7dam ,Chiều rộng là 54m.Hỏi diện tích của sân chơi đó là bao nhiêu dam2 giúp mình nx nha

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III. Choose the best answer 1.If we use water………, more people will have cleaner water. A. care B. carefully C. careless D. carelessly 2. Water pollution make some aquatic animals…….. A. dying B. to die C. die D. died 3. The team’s success was large ….. to her effort. A. because B. due C. since D. because of 4.English is an …….. language in Singapore. A. office B. official C. officer D. officially 5.She prefers English ……France. A. to B. for C. at D. in 6. Three hundred people …..homeless by the earthquake. A. left B. were leaving C. were left D. had left 7. By the time we got to the cinema, the film …………. . A. had started B. started C. starting D. has started 8.Many people die………..food poison today. A. at B.of C. in D. on 9. Do you know what ............ cause air pollution?. A. pollutants B. contamination C. death D. damage 10. The acid rain has caused ............ to the trees in this area. A. carefulness B. damage C. attraction D. difficulty 11. New Zealand is famous for the ............ beauty of its mountains and forests. A. easy B. historic C. nomadic D. scenic 12. The ............ buried the whole village while people were still sleeping in their houses. A. drought B. flood C. mudslide D. tornado 13. If people ..................... to work by bus, there......................fewer car fumes. A. to travel/be B. travel/are C. will travel/be D. travel/will be 14. If people didn’t throw rubbish in the street, it........................... attractive.. A. will look B. would look C. look D. to look 15. There are about 750 million English speakers in the world, and this number ............ fast. A. is increasing B. to increase C. are increasing D. increase 16. In the future, natural disasters............ accurately with the help of technology. A. to predict B. predict C. will be predicted D. will predict 17. On my birthday, I was very pleased because I .......... a nice present. A. receive B. had received C. receives D. am receiving 18. A..............is the traditional garment for Scottish men. A. hanbox B. veil C. kimono D. kilt 19. How about organizing a Clean Day for our school? - ........................ A. I promise. B. Good idea. C. Not at all. D. Go ahead. 20. Water _______ in the lake has made the fish die. A. pollution B. pollute C. polluted D. polluting 21. _____ workers were sent to the area immediately, but no villager was survived when the landslide happened. A. help B. rescue C. volunteer D. assistance 22. Three hundred people were left _____ by the earthquake. A. home B. property C. homeless D. house 23. The train or Ha Noi ______ at 7a.m tomorrow. A. leaves B. leaving C. to leave D. left 24. Environmental pollution has _____ to lots of health problems. A. caused B. got C. made D. led 25. The heavy rain has caused _______ in many parts of the country. A. drought B. storms C. forest fire D. floods 26.If we use water………, fewer people will have cleaner water. A. care B. carefully C. careless D. carelessly 27. The city has a summer _____ in the park . A. festivily B. festive C. festively D. festival 28.She prefers English ……France A. to B. for C. at D. in 29. By the time we _______ to the cinema, the film had started . A. had got B. got C. were getting D. get 30.Many people die………..food poison today. A. at B.of C. in D. on 31. A person who __________ the bagpipes is called a piper. A. plays B. performs C. entertains D. does 32. Don’t drink that water. It’s __________. A. damaged B. dumped C. contaminated D. clear 33. The team’s success was largely __________ to her efforts. A. because B. due C. since D. however 34. I often drink coffee, but today I __________ tea. A.am drinking B. drink C. drank D. drinks 35. All our English teachers are __________ speakers. A. native B. original C. foreign D. official 36. If you __________ the president, what would you do to help the environment? A. are B. had been C. were D. was 37. Eating too much sugar can __________ to health problems. A. cause B. lead C. make D. take 38. Emergency teams are still removing the __________ from the plane crash. A. dirt B. debris C. dust D. air 39. The heavy rain has caused __________ in many parts of the country. A. storms B. floods C. drought D. heat