一道难题，求学霸指点，谢谢

How can middle school students help save school environment?
Our campus environment has become increasingly worse these days due to our big student population. As students, we should all be aware of the importance to keep our campus clean. It is for the benefit of all people that we start doing the following: 1.Throw your trash in the trash can. If there isn't one around, put it in your pocket first until you find one. 2. Don't step on lawns and/or flowers. As we all know, green plants make our school a much prettier place. They also provide us with fresh oxygen that clears our mind. So it is important that we start being nicer to them. And keeping your feet away is a step to better campus!

这是不倒翁写的 供你参考Our environment is getting worse and worse now. People throw their garbage here and there. Factories make more and more dirty water that has polluted the rivers and lakes. What should we do? 　　We must find ways to stop pollution. Waste water must be cleaned before it is poured into the river. People shouldn‘t throw away rubbish here and there. We should pick up the garbage around us. We‘d better plant more trees. 　　I‘m sure if we take care of our environment, our world will be more beautiful!