阅读下面的短文，然后按照要求写一篇150词左右的英语作文。
This is a story that happened in a school campus. One day, after school was over, Peter was taking a walk in the school campus, singing very happily. When he passed by a water tap(水龙头), he found that water was still running.Someone forgot to turn it off although it was the easiest thing for him to turn it off, and he should have done so，he seemed not to have noticed it and went on walking as if nothing was happening there.   
Just then, Mary was passing by and noticed that. Who left the water running after using it? she thought to herself. She rushed to the tap and turned it off as quickly as possible.When　Mary was doing that, Peter was right there, standing beside her with a cold look. Mary turned to him and scolded him for not having turned off the tap. “It is none of my business！”Peter said coldly, Besides, it was not I who had turned it on.”Hearing this, Mary was very disappointed and she was at a great loss.
【写作内容】
1．以约30个词概括短文要点；
2.然后从"节约资源，保护环境，从身边小事做起”这一角度，写一篇120词左右的英语作文。内容包括：    
(1)简要评述Mary或Peter的行为并说明你的理由；    
(2)叙述你或你身边所发生的类似的故事；    
(3)谈谈你的感受与启发。
【写作要求】
1.作文中，可以使用自己亲身的经历或虚构的故事，也可以参照阅读材料的内容，但不得直接引用原文中的句子；
2.作文中不能出现真实姓名和学校名称；
3.标题为：Try to Do the Small Things around You