This is our campus, and we have the responsibility to keep it clean and tidy. It is not good to spit in public places, such as libraries and classrooms. Everyone should take good care of the lawn and don't trample it. We shouldn't litter everywhere. Don't scribble on the wall, lest it affect our school appearance. We should always clean. If everyone tries their best to do more good things for the school, I believe our campus will be more beautiful!
Investigation report on garbage classification of college students
I. Ask questions:
1. The mass production of garbage and its harm to hu