1. (2020七上·罗湖期末) 仔细阅读下面的句子，然后用下面方框中所给单词的适当形式填空，使每个句子在结构、句意和逻辑上正确。每个单词限用一次。

pollute    worker    usual    catch    breath

1. （1） Tom is a good boy. He helps his mother with her housework at weekend.
3. （2） — Do you like to live in the city or the countryside?

   — I enjoy living in the countryside because I like to the fresh air.

5. （3） We should plant more trees because it is good for the air .
7. （4） Mary and Lily's father often a lot of fish in the pond. How fun it is!
9. （5） When I grow up, I will as an English teacher. That is my dream.