Teddy was a happy bear. He lived in a beautiful forest. Every day, Teddy picked the fruit on the trees. Teddy had many friends in the forest. Sometimes they went to the river together. They caught a lot of fish.
One day, some people came and cut down hundreds of trees. They built a factory in the forest. The factory gave out black smoke and dirty water. The forest was not beautiful any more.
Teddy went to the river. The water was too dirty. There were no more fish in the river. He felt very sad. Finally, he had to leave the forest.
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