问题
选择题
There is __________ "s" and __________ "u" in the word "student".[ ]
A. a; a
B. an; an
C. a; an
D. an; a
答案
答案：D
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There is __________ "s" and __________ "u" in the word "student".[ ]
A. a; a
B. an; an
C. a; an
D. an; a
答案：D