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题型：语法填空（单句） 题类：真题 难易度：容易
黑龙江省龙东地区2018年中考英语试卷
CFCs {#blank#}1{#/blank#} {#blank#}2{#/blank#} to make plastic items.
—Yes. If you break them, you are {#blank#}1{#/blank#}(要求) to leave here.
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