问题
选择题
They must have been enjoying themselves there, or they _____ so long. [ ]
A. wouldn’t stay
B. wouldn’t have stayed
C. needn’t have stayed
D. couldn’t stay
答案
答案：B
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They must have been enjoying themselves there, or they _____ so long. [ ]
A. wouldn’t stay
B. wouldn’t have stayed
C. needn’t have stayed
D. couldn’t stay
答案：B