问题描述：
帮我看下英语作文有何错误,On Friday,some students are cleaning when sch
On Friday,some students are cleaning when school is over.Hero is cleaning the window .He clean the window again and again until it is clean enough.May is cleaning the blackboard because she is tall enough to clean the top of the blackboard,Jack is sweeping the floor,He also work very hard.(结尾帮我想下.
On Friday,some students are cleaning when school is over.Hero is cleaning the window .He clean the window again and again until it is clean enough.May is cleaning the blackboard because she is tall enough to clean the top of the blackboard,Jack is sweeping the floor,He also work very hard.(结尾帮我想下.
问题解答：
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