英语作文：假如你是李冰.David是你的美国笔友.他对中国鼓励使用环保购物袋很感兴趣,来信向你询问此事.请你给他写封回信,主要内容如下：1.感谢他的关注2.简要介绍相关情况3.谈谈你的感想环保购物袋----environment-friendly shopping bag关注---concern

Hello,David !I have received your letter and you asked me something about some issues on environment protection in our country.Now I would like to thank you for your concern .And I want to tell you about it .Nowadays in our country people are more concerned about environment .So our government adopted several protecting ways.For example,government encourage us to use environment-friendly shopping bags instead of plastic bags.I think it a good way to protect environment.Besides,we have taken many other measures to protect our environment.How about yours?Please write to me .I am looking forward to your reply.
Yours.
Libing.