用单词的正确形式完成短文

plastic, we, waste, good, river

As we all know, the environment around us is getting worse and worse. Some chemical factories always pour water into the . And they also produce terrible gas. In some places, some people even have no clean water to drink. So I think we must do something to protect the environment.

How to protect the environment? First, as a student, we should use cloth bags instead of bags when we go shopping. Second, we'd better reuse the old textbooks as possible as we can. Third, we should, never forget to turn off the lights when we leave the classrooms. In a word, we must try best to protect our environment. I believe we can make the world a place to live in.