◎ 题干
— They _____ have prepared for the meeting more carefully.
— But they didn't. What a pity!
[     ]
A. shouldn't
B. can't
C. may
D. ought to
◎ 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“— They _____have prepared for the meeting more carefully. — But they didn't. What a pity![ ]A. shouldn't B. can't C. may D. ought to …”主要考查了你对  【情态动词】  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。