71. In the big city, there are more schools and hospitals are available for its people.

在大城市，有更多的学校和医院供人们使用。

72. Some people think that we should read extensively.

有一些人认为，我们应该有选择性地阅读。

73. In my opinion, you should come back after you finish you studies abroad.

在我看来，你结束留学后应该回国。

74. For another reason, I think it will be much more convenient for you to look after you parents as they are getting old.

另一个原因，我认为你回国可以更方便地照顾你日渐年迈的父母。

75. Classes in our school usually finish at four in the afternoon.

我们学校通常下午四点下课。

76. I am so sorry that I wont be able to attend tomorrows lecture on American history.

我很抱歉，明天我不能参加那场关于美国历史的演讲。