问题
选择题
— Why does Sara know so much about Angkor Wat?
—She ____ have been there, or... [ ]
A. must
B. oughtn't to
C. may
D. can't
答案
答案：C
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— Why does Sara know so much about Angkor Wat?
—She ____ have been there, or... [ ]
A. must
B. oughtn't to
C. may
D. can't
答案：C