1. 根据句意及汉语提示, 在空白处填入适当的单词。

1. （1） There is a red national （旗）on the playground.

3. （2） Be careful! The bottle is （满的）of hot water.

5. （3） She （招待）him to dinner yesterday afternoon.

7. （4） — How far is the （月亮）from the sun?

   — Sorry, I don't know. Let's ask our geography teacher.

9. （5） It's （重要的）to obey the traffic rules on the roads.