I have a good friend. His name is Jimmy. We do not live in the same flat, but we meet at school every day. We are not in the same class. Jimmy has a small puppy. Its name is Barley. I have a dog, too. But it is very big. Its name is Visa. His dog and my dog are good friends, too. After school I often play with Jimmy and our dogs often play together, too. All of us are very happy.
1．Jimmy is my classmate. （The earth is our home. It belongs to the people all over the world. Do you hear the Earth crying? Because sometimes people pollute the environment. It makes the Earth dirtier and dirtier. People have air pollution, water pollution and land pollution. We can't pollute the Earth any longer. It is our own home. Be Friends of the Earth! We must take care of our earth. We must do something to keep the Earth cleaner and cleaner. We can do a lot for the Earth. Come on, everybody. Never leave rubbish here and there. Put rubbish into rubbish bin. Plant more trees and keep the air clean.
（1）Do we live on the Earth? _________________________________________
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