问题
选择题
—Is this _____ cake?
—No, it's _____ egg.[ ]
A．an, an
B．a, a
C．a, an
D．an, a
答案
答案：C
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—Is this _____ cake?
—No, it's _____ egg.[ ]
A．an, an
B．a, a
C．a, an
D．an, a
答案：C