1. 用所给词的适当形式填空

1. （1） Do you lie (wake) at night, worrying about things?

3. （2） Do you know the (important) of saving the wild animals?

5. （3） We should make some rules on whale (protect).

7. （4） He can't go to school because of his (ill).

9. （5） When the lost child saw his mother, he ran over with (excite).