As we know, the environment around us is getting worse and worse. Some factories produce terrible gas. Rivers are heavily polluted.
As students, we should do something for the environment. First, we'd better reuse the old text books. Second, we should remember to turn off the lights when we leave the classroom. Finally, it's a good idea to use china cups instead of paper cups.
It is important to protect the environment because we have only one earth. If we try our best. we can make the world a better place to live in.