问题
选择题
—Who is the girl standing over there?
—Well, if you _____ know, her name is Joe. [ ]
A. must
B. may
C. can
D. shall
答案
答案：A
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—Who is the girl standing over there?
—Well, if you _____ know, her name is Joe. [ ]
A. must
B. may
C. can
D. shall
答案：A