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题型：语法填空（单句） 题类： 难易度：普通
人教版(2019)选择性必修第一册UNIT 4 Adversity and Courage课时评价作业
— All the applicants before a final decision is made by the authority.
The machines are not {#blank#}1{#/blank#}tonight.
— Yes. While at college, I ______ it a couple of times.
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