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最佳答案:1.We shouldn't cut down many trees or it can do great harm to us.2. I shouldn't
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最佳答案:Save the earthHow to protect the environment has become one of thebiggest proble
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最佳答案:Saving the EarthHow to protect the environment becomes one of the biggest proble
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最佳答案:The earth is our only home. The water was very clean ,the air was very fresh bef