參考范文：

Dear editor,

I am a student of Senior Three in a middle school in Fujian Province.

In order that we can make the best of learning materials,the Students’ Union of our school is arranging an activity.We students of Senior Three are called on to give away our used books,newspapers or magazines to the students in the lower grade.The idea,which is intended to promote friendship and encourage economy,is highly praised and supported by the teachers and students alike.The activity will last about ten days,from June 10 to 20.

As a student,I am strongly for the activity because it is very meaningful and helpful.I hope that this kind of activity will continue in the future.

Yours sincerely,

Lin Hua