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Chapter 2 Protecting Our Environment单元测验 根据句意及首字母提示补全单词 1. Pollution m the process of making things dirty and unhealthy. 2. I like English very much. And I am quite i in it. 3. When insects attack a tree, it can w its neighbors. 4. We should communicate with one a . 5. I am not sure. It p belongs to Amy. 6. More and more animals are in d without the protection(保护) of trees. 7. Trees can g out oxygen and clean the air. 8. We should plant trees and t care of them. 9. We all know trees p food and many other things for people.
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