1. 根据所给提示，在空格中填写适当的单词，使句子完整、正确。

1. （1） You can ask for help （无论何时）you need it.

3. （2） The children had （已经）been asleep when I got home.

5. （3） Thomas Edison had made more than one thousand （发明）in his life.

7. （4） After so many (year) practice, Li Na becomes a well-known tennis player.

9. （5） Nobody thought my sister drawing. She learnt it by (her).