假如你所居住的城市环境污染越来越严重，请根据提示写一篇短文说明污染原因，并呼吁人们爱护环境，保护地球。
提示：
1. 污染原因：工厂燃烧东西制造能量；人们大量砍伐树木；公路上汽车数量的增多，污染空气；人们乱丢垃圾，污染土地；
2. 呼吁保护环境：
（1）. 多植树，停止乱丢垃圾；
（2）. 自己补充一点保护环境的方法；
要求：
1. 内容要点齐全，可以适当发挥。
2. 正确运用人称、时态、语法等。
3. 词数要求：70个左右。
4. 短文的开头已给出，不算入总词数。
Protect the Earth
The environment in my city is becoming worse and worse.
                                                     .

【考点】环境保护．

【答案】Protect the EarthThe environment in my city is becoming worse and worse. Factories burn things to make energy. People cut down many trees. It is bad for the air ，too. There are many cars on the streets. It also pollutes the air. People throw away rubbish everywhere. This pollutes the land.
As far as we know， it is our common dream to build a green home.What can people in my city do to protect the environment ？ First， we  should plant trees to make the air clean. Second， we must stop throwing away so much rubbish. Last but not least，we should go to work by bus or by bike.All in all，we must try to protect our environment and make the world more beautiful.