假如你是某校学生会主席李凯，为配合学校环保教育主题活动，请根据下列提示，用英语写一封80词左右的倡议书，内容包括:

1）环保措施和美化城市的措施;

2）你的希望。

Dear friends,

……

Thank you!

Li Kai

The Green City, the Healthy Life

As a citizen, it's our duty to help build a green city so that we can live a life. But how can we help do it?

It's known to us all that we can reduce air pollution by bicycles. It's better for us to sort the rubbish and it into the correct rubbish bin. In this way, we can keep our city . And we'd better plant more flowers, grass or trees to beautify our living environment.

In my opinion, I'll do my best to our city cleaner and more beautiful. Firstly, I can water by taking shorter showers.

Secondly, I should save energy by the lights when I leave the room. In a word, everyone can  to make a difference to our city and the environment.