◎ 题干
We would have called a taxi yesterday if Harold ________ us a ride home.
[     ]
A. didn't offer  
B. wouldn't offer
C. hasn't offered  
D. hadn't offered
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“We would have called a taxi yesterday if Harold ________ us a ride home.[ ]A. didn't offerB. wouldn't offerC.hasn'tofferedD.hadn'toffered…”主要考查了你对  【虚拟语气】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。