A severe tropical___________ is called a typhoon. A. drought B. rain C. flood D. storm 8. As soon as the floodwater ___________ down, people ____________ their houses. A. went - cleaned B. had gone – cleaned C. went - had cleaned D. had gone – had cleaned 9. If I were you, I _______ something to prevent him from littering. A. would do B. did do C. will do D. do 10.Earth ____________ by the gravity of the Sun and orbits around it. A. holds B. is held C. is holding D. held 11. By the time we ____________to the cinema, the film had started. A. gets B. had got C. has got D. got 12. When the policeman came there, the robber ____________ A. had left B. has left C. left D. was left 13. All people who were without homes in the flood were provided with __ accommodation. A. short B. temporary C. present D. instant 14. Seven of ten people prefer face-to-face ____________ when having a date. A. language B. contact C. code D. sign 15. When thermal pollution happens, the water temperature in streams, rivers, lakes and oceans ____________. A. changes B. keeps C. remains D. stays 16. If you were the president, what ____________you do to help the environment? A. will B. did C. would D. do 17. The village’s drinking water__________ with poisonous chemicals since the factory came into operation. A. contaminates B. is contaminated C. has contaminated D. has been contaminated 18. When the policeman came to the scene, the driver of the car__________ A. have left B. had left C. leaves D. was left 19. All people who were without homes in the flood were provided with ___accommodation. A. short B. temporary C. present D. instant 20. I believe that our new manager has the______ to work well in this business environment. A. inflexible B. flexibly C. flexibility D. flexible 21. If the factory _________ dumping poison into the lake, all the fish and other aquatic animals will die. A. continues B. continued C. will continue D. continue 22. You will recognize Jenny when you see her. She __________ a red hat. A. wears B. is wearing C. will wear D. will be wearing 23. Robots save workers from _________dangerous tasks. A. making B. having C. performing D. carrying 24. Many people believe that robots have made workers jobless _________that is not necessarily true. A. but B. and C. so D. or 25. Recent__________ developments have made robots more user-friendly and intelligent. A. science B. scientist C. scientific D. scientifically 26. Teenagers spend most of their time playing computer games, __________ they lost their interests in daily activities. A. moreover B. so C. however D. as a result 27. If we use water __________ , more people will have cleaner water. A. care B. carefully C. careless D. carelessly 28. Water pollution make some aquatic animals_________ A. dying B. to die C. die D. died 29. The team’s success was large __________ to her effort. A. because B. due C. since D. because of 30. English is an__________ language in Singapore. A. office B. official C. officer D. officially 31. She prefers English _________ France. A. to B. for C. at D. in 32. Three hundred people __________ homeless by the earthquake. A. left B. were leaving C. were left D. had left 33. By the time we got to the cinema, the film__________ A. had started B. started C. starting D. has started 34. Many people die__________ food poison today. A. at B. of C. in D. on 35. Do you know what __________ cause air pollution? A. pollutants B. contamination C. death D. damage 36. The acid rain has caused__________ to the trees in this area. A. carefulness B. damage C. attraction D. difficulty 37. The __________ buried the whole village while people were still sleeping in their houses. A. drought B. flood C. mudslide D. tornado 38. 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 39. If people didn’t throw rubbish in the street, it __________ attractive. A. will look B. would look C. look D. to look 40. 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