Nowadays, the environment of our school is getting more and more polluted, so I think we should take action to protect them. Firstly, we don't throw rubbish inside or outside classrooms. It is easy to put our wastes in dustbin instead of throwing away. Secondly, we shouldn't write or draw anything on desks or walls. I suppose that this action is not good because we are destroying the school property. Futhermore, the classrooms should be cleaned every day by not eating or making too many litters at school. Finally, we should water trees and plants at school regularly. Moreover. planting more trees help us to respiratory benefit and limit air pollution. In conclusion, these ways bring us manu benefit because it isn't only protect environment of school but only make us to become more healthy.