问题
选择题
—Is this _____ pear?
—No, it isn't. It's _____ egg. [ ]
A. a, an
B. an; a
C. a,a
D. an, an
答案
A
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—Is this _____ pear?
—No, it isn't. It's _____ egg. [ ]
A. a, an
B. an; a
C. a,a
D. an, an
A