为了保护环境、节约能源，越来越多的人选择低碳生活。作为中学生，我们能为环保做些什么呢？请你根据以下要点提示用英语写一份倡议书，呼吁你们班同学保护环境。

要点提示：

1.少使用塑料袋；

2.循环使用旧课本；

3.少乘电梯，节约用水、用电；

4.多植树；

5.最好步行或骑自行车上学。

注意： 1.词数80左右（格式、开头和结尾已给出，不计人总词数）；

2.可以适当增加细节，以使行文连贯。

My fellow students,

Our environment is becoming worse and worse. As students, what can we do to protect the environment?

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In fact, even the simplest everyday activities can make a difference to the environment. I believe that by working together we can make the world a better place to live in.