There are a lot of ways to keep our school clean and tidy. Firstly, put our trash right into the bin. Visitors will think our school is messy and dirty when they see there are a lot of garbage near the bin. And the cleaner will be angry and upset,too. Secondly, clean your classroom. If every students in the school clean their classrooms, the school will look nice. Finally, lock the water and turn off the lights when you don't need to use them. You can both help the environment and help the school tidy and clean.