1. 根据句意，从方框中选择恰当的单词填空，有的需要变换形式

begin，strange，suddenly ,heavy

1. （1） Look! There's somethingin the sky．What's it?
3. （2） Jackie stood up andto move around his room．
5. （3） It rainedlast night and it is very wet now．
7. （4） A warm thought(想法)came to me．I might buy some flowers for my mom．