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