I would like to tell you the changes that happened in my hometown.in the past, the houses were simple and crude and the streets were narrow ,but it was full of vitality ,because there were many trees and rivers where the lovely fish ran after each other.Now it is many buildings and cars,our life become convenient,however,the environment is worse with the dovelopment of industry so that we saddly find the reduction of trees and fish .So the most important thing is to solve the pollution.