---Would you have helped her had it been possible? ---Yes, but I __________ busy with my work.
A．was
B．had been
C．have been
D．am
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◎ 知识点
根据魔方格专家分析，试题“---Would you have helped her had it been possible?---Yes, but I __________ busy with my work.A．wasB．had beenC．have beenD．am…”主要考查了你对 【一般现在时】，【将来进行时】，【过去完成进行时】，【过去将来时的被动语态】 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。
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