◎ 题干
If we   ________   adequate preparations, the conference wouldn't have been so successful.
[     ]
A. haven't made  
B. wouldn't make
C. didn't make  
D. hadn't made
◎ 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“If we ________ adequate preparations, the conference wouldn't have been so successful.[ ]A. haven't madeB. wouldn't makeC. didn't makeD. hadn't made…”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。