问题
选择题
Their house ______ have been sold, but I haven’t been told about it. [ ]
A. must
B. may
C. shouldn’t
D. needn’t
答案
Ｂ
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Their house ______ have been sold, but I haven’t been told about it. [ ]
A. must
B. may
C. shouldn’t
D. needn’t
Ｂ