1. 用所给词的适当形式填空

1. （1） —Tom, try (not be) late for Tim's birthday party tomorrow.

   —Don't worry. I won't.

3. （2） I don't know how I can practice  (speak) English.

5. （3）  (sing) an English song isn't easy for the little boy.

7. （4） A good way (learn) English is to join an English club.

9. （5） Would you mind turning down the music? I (write) a report now.