in the past, my hometown was surrounded with green tress. the water in the river was clear with many fish swimming in it, which was near to my family. the house was simple with narrow street. people worked hard with a poor life. now there are many tall buildings everywhere . bigt or small cars run in the street. the industy developed but he enivorment is worse. the trees are fewer and fish disappeared. it is time to make some methods to improve the environment.