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题型：单词拼写（语篇） 题类：常考题 难易度：普通
新版牛津上海版（深圳用）六年级上册英语Unit 10 Air同步练习
Dear friends，
Air is important．It keeps，andalive．
The air in our city was clean，but now it is．We should.We should .
Let's keep the air clean!
Ben and Kitty
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—OK．Have a good sleep．
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