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38. D. The telephone and the car 39. B. All these inventions have made people's lives easier. 40. B. someone had the idea to invent the computer in the 1940s. 41. C. a celebrated date 42. B. Some inventions that have made a big difference. 43. Many houses in this village were destroyed by the storm last week. 44. My friends tell me they may go sightseeing in Sa Pa the following week. 45. Many plants and trees died last month because of acid rain. 46. Although cars cause pollution, people still want them. 47. Despite having a good salary, the man was unhappy. 48. Mr. Smith has written a lot of articles for CNN News. 49. My roommate told me that while I was away, he would do the cleaning. 50. I don't buy seafood because I don't have enough money.