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题型:语法填空(单句) 题类:常考题 难易度:普通
江苏省扬州市扬州大学附属中学东部分校2015-2016学年七年级上学期英语期末考试试卷
Humans {#blank#}1{#/blank#}(pollute) the earth all the time and there is not enough clean air and water.
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