一。
76. We don’t know that we can do about it.
77. Could you tell me how I could get to the nearest post office?
78. The old man said he had joined the army in 1965.
79. Mary said she did not heard from her old classmate since September.
80. Charles asked he could use my car.
81. Mother asked me where I will go the next day.
82. Do you have a friend whom you could tell everything, like your deepest feelings and thoughts.
83. Don’t look at someone else paper, John. You should do it by yourself.
84. In order to improve your English, you can try writing an English diary every day.
85. The teacher gave a series of example in her lecture in order that everybody could understand.
二。
76. In the end of this term, the school will organize a summer camp.
77. The highway was closed because the heavy snow that had never been seen for fifty years.
78. The good use you make time is the key to improving your studies.
79. The large number of people in China are learning English now.
80. The result based on a lot of experiments.
81. Mary and Bob can understand each other since they don’t speak the same kind of English.
82. Some old people feel quite puzzled in the rapid changing world of computer technology.
83. In different part of the world, people have their own ways to celebrate the New Year.
84. My mother told me not play computer games on weekdays.
85. My little sister asked me don’t leave her alone at home.
现在只需要第二大题的答案~~~!!!!!
参考资料:原创回答团(159号会员)