Guangzhou is a beautiful modern city.There are tall buildings and clean streets everywhere.We are suppose to keep our city clean around us in order to make some contributions to our city.It is everyone's responsibility to protect environment and we should take actions,for example,donot spilt in public place,donot throw trash everywhere and donot draw some messes on the wall.We should behave ourseleves and make more people know the importance of protecting environment.The more people know the importance,the better environment will be.So let us hand in hand and do this as soon as possible.