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题型：单选题 题类：常考题 难易度：普通
牛津上海(本地版)五四制初中英语九年级上册Module 2 Unit 4 Computers单元测试卷（含小段音频）
—Yes, He was sad when he knew his grade.
—I don't know. It just ____ and I couldn't find it anymore.
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