1. 根据句意及首字母或汉语提示完成单词。

1. （1） When is he leaving for the (机场)?

3. （2） The headmaster n to us with a smile．
   

5. （3） What made me worried is that my mother's hair has turned (灰白的)．

7. （4） Though the boy was young，he (表现)very well．

9. （5） Could you give me some (建议)on how to learn English well?