上个月，西安市政府迎接了创建全国文明城市巡检。为配合此项工作，上周日，你们学校组织了一场名为"文明无句号，创建无止境"的环保活动。请根据以下图片及提示，用英文写一篇短文，简要介绍你们的活动和感受。

参考词汇：clean up；guide the pedestrians（行人）；volunteer；…
要求：
（1）使用参考词汇，可适当发挥；
（2）语句通顺，意思连贯，书写工整；
（3）文章不得出现任何真实信息（姓名、校名和地名等）；
（4）词数：不少于70词。（开头已给出，但不计入总词数）
    To build a civilized city，our school organized an environmental protection activity last Saturday.We did many meaningful things.                                     

【考点】记叙文；环境保护．

【答案】To build a civilized city，our school organized an environmental protection activity last Saturday.We did many meaningful things.It was a fine day.Some of our classmates helped with the cleaning.There was a lot of garbage out there because of people's uncivilized behavior.We cleaned them up.Some students helped direct the traffic.If we encountered uncivilized traffic behavior，we would correct it promptly.Some students went to the nursing home.We tell them stories to make them happy.Although we were tired this day，we were very happy.