书面表达。 假设你是中学生李华，你的美国笔友 Chris得知你校正在积极开展“绿色校园行”活动他非常感兴趣，便写信给你，希望你介绍相关情况。请根据以下提示给他写一封回信。

书面表达(满分25分)
假设你是中学生李华，你的美国笔友 Chris得知你校正在积极开展“绿色校园行”活动他非常感兴趣，便写信给你，希望你介绍相关情况。请根据以下提示给他写一封回信。
1.简单介绍开展“绿色校园行”活动的目的；
2.介绍你校开展“绿色校园行”活动的主要做法(如减少资源浪费、鼓励废旧物回收利用、垃圾分类等)；
3.表达希望了解美国学校如何开展类似活动，并征求建议
注意：
(1)词数100左右；
(2)可适当加入细节，使内容充实、行文连贯；
(3)开头和结尾已给出，不计入总词数。
参考词汇：绿色校园行 Green Campus Campaign；垃圾分类 waste classification
Dear Chris，
                                                         
                                                                                                              Yours
                                                                                                                Li Hua


【参考范文】
Dear Chris,
I'm glad to receive your last letter asking about the Green Campus Campaign in our school. Now let me tell you something about the meaningful event.
Aiming to create a green campus which is beneficial to us physically and mentally， our school carried out the Green Campus Campaign， which encourages the recycling of waste materials， reduction of the waste of resources and waste classification. Since the campaign was carried out， all the students have shown great all agree that the concept of “green campus” does not only mean a green environment but also refers to an environmental sense in people's mind， so we decide to start from small things around us，start from ourselves， and make an effort to help create a green campus.
If your school also holds such activities， please tell me about them. I will appreciate it if you offer some suggestions.
I'm looking forward to your reply.
                                                                                                                                                         Yours,
                                                                                                                                                              Li Hua