1. 根据句意及首字母提示补全单词。

1. （1） The earth goes a the sun.
   

3. （2） The question is too difficult．I can't ait．
   

5. （3） The little girl p the door and came into the room．

7. （4） The hboy ate two bowls of rice once．
   

9. （5） It's too din the room．I can't see anything．