问题
选择题
There's _____ "u" and _____ "m" in the word "number". [ ]
A. an; a
B. an; an
C. a; a
D. a; an
答案
答案：D
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There's _____ "u" and _____ "m" in the word "number". [ ]
A. an; a
B. an; an
C. a; a
D. a; an
答案：D