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题型：单选题 题类：常考题 难易度：普通
黑龙江佳木斯市建三江农垦管理局15校2018-2019学年七年级上学期英语期中考试试卷
--One third of my books ___________ missing.
—Yes, I lost them in the classroom．
People {#blank#}1{#/blank#} {#blank#}2{#/blank#} many trees every year.
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