题目内容：

根据句意，用括号内所给词的适当形式填空。 用括号里所给的单词正确形式填空。

1.We were climbing up the mountain when it began to rain ___________(heavy).

2.John often spends a lot of time _______ ( play ) computer games.

3.He had a fight with his best friend, and they walked  home in__________ (silent).

4.Please allow me ______________ (introduce) myself first.

5.Kate didn’t think her friend was telling the ____________(true) about the event.