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英语 高中 · 高一 沪教版 · 必修第二册 单选题 ★★★★★ 编号 #9693
My parents ___ for the exam before 2010.
A. would prepare
B. had prepared
C. were preparing
D. will be prepared
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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