当我们要批驳一个错误观点时，我们可以这样表达：

It is hard to believe that some people should have such a stupid idea.

Radio and television have made it possible for advertisers to capture the attention of millions of people in this way. (Lesson 26) (it充当形式宾语)

以“Getting to know the world outside the campus”为题目的作文中，我们可以这样开头：

With the development of our society, the campus is no longer an “ivory tower” and students find it hard to confine themselves to the campus.

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