◎ 题干
I would have called you up for help had it been possible, but I ____ your phone number then.
A. hadn't had
B. didn't have
C. shouldn't have
D. couldn't have
◎ 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“I would have called you up for help had it been possible, but I ____ your phone number then. [ ]A. hadn't had B. didn't have C. shouldn't have D. couldn'…”主要考查了你对  【一般过去时】  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。