Have you ever seen this situation on the campus?
It’s a common sight in our lecture rooms.

 Did you or people around you do it?
It’s very unfortunate that there is not even one person who bothers to pick up trash thrown away on our campus.

As noted above, garbage is constantly being dumped and it is polluting our school environment and affecting many students. Thoughtlessly littered trash in lecture rooms is far from making a pleasant environment to study, and trash in the corridor and stairs makes people frown. The campus and students are suffering from trash. Isn't there any way to resolve this problem?

 Let us be responsible and pick up the trash around us.

 It is a nuisance but sorting out trash will really help to make a clean environment. 

A clean environment looks good and makes us feel pleasant.

Our campus is like our home.
If we think before we act and control our actions, everyone can live in a pleasant environment.
Try to have a good citizenship for a better school environment!