问题
选择题
If they had known what was coming next, they _____ their mind. [ ]
A. may change
B. could change
C. must have changed
D. might have changed
答案
答案：D
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If they had known what was coming next, they _____ their mind. [ ]
A. may change
B. could change
C. must have changed
D. might have changed
答案：D