题目内容：

根据句意和所给的中文提示，写出句子中的单词。

1.Something must be done ____________(阻止)the good land from being blow away by the strong wind.

2.Today is my mother’s_____________(四十)birthday.

3.I was ______________(失望)because my best friend didn’t show up at my birthday party.

4.Remember to lock your bike. Don’t have it ____________(偷)

5.The man is seriously injured， he needs _____________(医学)treatment at once.