Keep Our School Clean(範文背誦）

Good afternoon, everyone!

We are studying in this school, so it is our duty to keep it clean and tidy. It is not good to spit in publi places, Such as in the library or in the classroom. We shouldn't draw pictures on the walls or throw litter on the ground. I think we must make it a rule to do something useful for our school. I'm sure it will be much more beautiful. That's all. Thank you.