1. (2022·丽水) 用方框中所给词语的适当形式填空。每词限用一次。

cost   polite   safety   whose  look up

1. （1） Walking is good for health and it nothing.
3. （2） —ID card is on the desk?

   —Oh, it's mine.

5. （3） Mandy isn't allowed to drive because her parents worry about her.
7. （4） You canthe new words in the dictionary to help understand the text.
9. （5） When you are in another country, it is important to know how to ask for help.