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英语 高中 · 高二 译林版 · 选择性必修第二册 单选题 ★★★★★ 编号 #9741
They ___ two hours on the work before 2010.
A. had spent
B. spend
C. have spent
D. would spend
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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