1. 根据句意及首字母提示完成单词。

1. （1） It's necessary for us to learn a f language well.

3. （2） It's i for a student to have a special hobby.

5. （3） He came up to her and asked some q .

7. （4） My h is collecting stamps. I have collected thousands of stamps.

9. （5） They are going to b  many tall buildings in this city next year.