题目内容：

 

1.Two_______ of the land in that district is covered with trees and flowers．

2.On my desk is a photo that my father took of__________when I was a baby．

3.He behaves so__________ in public that no one likes him．

4.They run to __________, away from the fire.

5.To make a green world，we should try to reduce air _______ by walking more and driving less．