Р50. 每次这辆公交车来的时候,农民们就喊着、笑着向它跑来。РV. 51. laughed at 52. himself 53. easily 54. watered 55. troubleРVI. 56. Is this your ruler?Р57. What a wonderful movie!Р58. How much is your dress?Р59. You had better go to bed earlier.Р60. He has been here for two days.РB)61.书面表达РAs people are knowing more about PM2.5, they are ing more and more concerned about their living environment. As students,Рwhat should we do?РFirst, we should ride bikes or take buses to school. Riding bikes is also good for our health. We should try our best to advise our parents to drive less. Try to walk or ride bike to work. Second, we’d better use both sides of the paper. Don’t waste paper. Third, we should save power. Remember to turn off the lights when we leave the classroom. At last, we should plant more trees and flowers.
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