问题
选择题
— 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
答案
答案：D
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— 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：D