31. Life in a small town is __________ than that in a big city. A. peaceful B. much peaceful C. less peaceful D. much more peaceful 32. The boys often help their parents to _________ water from the village well. A. gather B. collect C. give D. find 33. In the Central Highlands, the biggest and tallest house in the village is the ___________ house. A. communication B. community C. communal D. commune 34. The Viet people have many ___________ customs and crafts. A. tradition B. traditional C. culture D. customary 35. ____________ month is the Hoa Ban Festival of the Thai people held in? A. When B. Which C. How many D. How often 36. The __________ on display in Da Nang Museum of Cham Sculpture are very interesting. A. items B. goods C. products D. shows 37. …………… water is one of the factors that have driven many species to the verge of extinction. A. Contaminating B. Contaminate C. Contamination D. Contaminated 38. It’s recommended that we become more concerned ……………… the environment around us. A. of B. to C. with D. about 39. The …………. Use of pesticides and herbicides has led to contamination of groundwater in some areas. A. widespread B. occasional C. general D. experimental 40. Air ……………, together with littering, is causing many problems in our cities today. A. pollute B. pollution C. polluting D. polluted 41. Many people in this city have received medical …………. for the disease. A. support B. treatment C. help D. assistance 42. The reduction in air pollution was ………… last year. A. dramma B. treatment C. help D. assistance 43. In many poor nations, there are frequent outbreaks of cholera and other diseases because people there ………….. untreated water. A. drink B. to drink C. drinking D. drank 44. The road in front of my office is always ……….. when it rains heavily. A. to flood B. flooding C. flood D. flooded 45. Too much carbon dioxide in the atmosphere causes global ……………. A. warm B. warming C. warmly D. warmth 46. It won’t be possible to save the Earth if we don’t take ………… right now. A. action B. job C. work D. duty 47. Singapore is famous for its …………. And green trees. A. cleanliness B. cleanly C. cleaning D. clean 48. On Christmas Eve, most big cities, especially London are ……………. with coloured lights across the streets and enormous Christmas trees. A. decorated B. hang C. put D. made 49. In the United State, there are 50 …………… and six different time zones across the country. A. decorated B. nations C. towns D. countries 50. I once tried to ………… apple pie when I was in London. It was really delicious. A. do B. cook C. make D. show