One possible version：
Recently our shool asked students to spend two days on campus clean-up instead of having classes ，abount which I made a survey。It shows that different students have different opinions about the activity 。
40 percent are for this decision。For one thing ，students can benefit from this activity in the process of growing up 。for another ，it can keep the school clean 。however ，the rest of the students hold different opinions 。in their opinion ，it is waste of valuable time and students should make full use of time to study hard 。they may do campus clean-up in their spare time。
Personally ，I don’t agree to the school’s idea because the most important task for students is to study hard。
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