1）说明写信的目的；
2）对这些行为提出批评；
3）提出建议。
注意：1）词数100左右；
2）可适当发挥，以使行文连贯；
3）邮件的开头和结尾已给出，不计入总词数。
Dear Mr. Headmaster,
I am Li Hua, a student from Class One, Senior II.
Best wishes!
Yours,
Li Hua
I am Li Hua, a student from Class One, Senior II. I am writing to draw your attention to some improper behavior among us students: littering and scribbling. It makes our school dirty and unpleasant, and does harm to the imag
