题目内容：

根据句意，用所给单词的适当形式填空。

1.How ____________you are to make such a mistake!  (careless)

2.I can’t understand his          (silent) on such an important matter.

3.If you take more exercise,  you will be              (health).

4.To everyone’s     , still many people are trapped under stones after the earthquake. (sad)

5. Li Ming goes to see his grandparents at a ________ (fix) date every month..