题目内容：

假定你是南阳一中某班学生李华，对于你们校园中存在的随意涂写（to scribble）和乱丢垃圾（to litter）的行为有感而发，请用英语给你校杨校长写封信。信中应包括以下内容：

1.说明写信目的；

2.对于这些行为进行批评；

3.提出建议。

注意：信的抬头，落款及日期以给出。

Jan26.2013

Dear Head master Yang,

                                                                        

                                                                        

                                                                        

                                                                        

                                                                        

                                                                        

                                                                        

                                                                        

                                                                        

                                                                        

Yours faithfully

Li Hua