题目内容

根据句意和汉语注释,写出单词的正确形式。

1. _______ (污染) air does harm to our health. It’s necessary to keep the air fresh and clean.

2. Our success was far _______ (超过) what we thought possible.

3. This kind of disease _______ (传播) so quickly that it drew the government’s attention.

4. The man kept remembering English words every day until he was in his _______ (四十).

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