中文谷—Haveyoufinishedyourhomeworkyet?—Yes.I
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问题详情：
—Have you finished your homework yet?
—Yes. I _______ it twenty minutes ago.
A. have studied B. studied C. will study D. had studied
【回答】
B
知识点：动词时态
题型：选择题
标签：
YesI
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