9. I am not used to speaking ____ public.我不习惯于当众演讲。

80. Travel broadens the mind. 旅游开阔了思维。

79. Open the window and let the fresh air in. 打开窗户,让新鲜的空气进来。

78. I look forward to hearing from you. 我期待着收到你的来信。

77. He keeps looking at himself in the mirror. 他一直看着镜子中的自己。

76. Riding bicycles can save energy. 骑自行车能够节省能量。

75. We used to live near a big park. 我们过去住在一个大公园附近。

74. You ought not to smoke so much. 你不应该吸这么多烟。

73. He is always making excuses for being late. 他总是为迟到找借口。

72. He has been learning English for years. 这几年他一直学习英语。

71. I am very familiar with his name. 我很熟悉他的名字。