假定你是李华，为节约资源和保护环境，请代表学生会向全校写一封将垃圾分类的倡议书。内容包括：
1.垃圾分类的必要性；
2.垃圾分类的做法；
3.提出倡议。
注意：1.词数100左右；
2.可以适当增加细节，以使行文连贯。

【考点】提纲作文；倡议书；厉行节约．

【答案】Dear fellow students，
First of all，in order to save resources and protect the environment，we are calling on every one of our school to form the habit of sorting out garbage before we throw it.By doing so，we can make waste recycling more easier and reduce pollution.
Secondly，garbage should be divided into four groups：recyclable waste，harmful waste，leftovers and other waste.It is necessary for us to collect and reduce leftovers.What's more，we are supposed to recycle electronic waste responsibly，such as batteries，mobile phones and so on.
Every effort makes a difference.Finally，let's take action to deal with garbage properly and make our world cleaner!
Students' Union