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英语 小学 · 五年级 北师大版 · 五年级上册 单选题 ★★★☆☆ 编号 #9949
You ___ for the exam before 2010.
A. would prepare
B. were preparing
C. had prepared
D. are preparing
章节：动词的时态 · 知识点：过去完成时 · 标签：时态,过去完成时,语法
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