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Keep our school clean 
        As students, we should try our best to keep our school clean. There are many things we can 
do. First, we shouldn't litter in our school. We should put rubbish into the bin. Second, we should 
sweep and mop the floor every day to keep it clean. It's good for our health to study in a tidy and 
clean environment. Finally, we should keep it clean as it is now.
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