4. Clean your area, but if you go to school, please clean out your locker and backpack. When you go through your locker make sure to throw away any old papers you don't need, any food, junk, or anything you know you don't need at school. In your locker you should basically have pencils and pens[if your school doesn't allow you to carry around a backpack or tote], books, tissues, and posters if you want them. In your backpack you should only have pencils, pens, books, and anything you NEED! Don't carry around any old papers you don't need.
保持整洁。如果你还在学校，请将自己的抽屉整理干净，将不要的东西清除出去。

来源:可可英语 http://www.kekenet.com/read/201001/93984.shtml