Good afternoon,everyone!

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We are studying in this school,so it is our duty to keep it clean and tidy.It is not good to spit in public 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 some cleaning every day.If everyone tries his best to do something useful for our school,I'm sure it will be much more beautiful.That's all. Thank you.