The model essay is as follows:

Mom said that the stream was still clear when I was a child. When children put their feet into the water, the fish will itch. The children shrank their feet back with a smile. I really envy you, because what I see now is another scene.

Many people pour waste water into the stream, throw waste paper, fish bones, rotten radishes and leftover bones into the stream, throw cigarette butts and leftovers into the stream, and throw beverage cans, soda bottles and pig food into the stream.

Just when it was thrown away, the stream was no longer clear, fish and shrimp disappeared, and domestic garbage floated on the water from time to time. When the weather is hot, it always gives off an unpleasant smell. People have to cover their noses when crossing the bridge.

The stream is still gurgling, but it is no longer like singing, but like crying, like telling people the crime of insulting her. Looking at the dirty stream, I felt very distressed and secretly made up my mind: "When I grow up, I will try to make her clean!" " "