请以“How to protect our environment" 为题 写一篇英语作文

we can do many things for our environment.firstly,we should not throw things here and there .for example,we should put the wasted plastic bags in the correct place .secondly,it is also a good idea that we call on other people to protect our environment.thirdly,when we see pulltion ,we shoud struggle with it.at last ,it is our duty to protect our environment.so we should spare no effort to do it.