目前，全区上下都在大力开展城乡清洁工程的活动。为了响应政府的号召，3月25日，星期天，你们班参加了一次校外环境卫生清洁活动。请根据图画所提供的信息，用英语写一篇日记，并谈谈你的看法。

　　注意： 1. 可以适当增加细节，以使行文连贯、完整; 2. 词数：100左右。

　　Sunday, March 25 Fine

　　Today our class went out to do some cleaning. We gathered at the school gate and started out early in the morning. Some collected the rubbish in the park, some cleared the old posters off the walls, and others swept the street. We hoped to make our city more beautiful with our own hands. At the same time some of us went to the public places, where there were a lot of people. We kept on telling people not to destroy the beauty of nature so that we can have a cleaner world.

　　In my opinion, such activities are necessary and instructive because some people are unaware of the importance of protecting the environment at present.