问题
选择题
He is _________ man. He is _________ old man.[ ]
A. a; a
B. a; an
C. an; a
D. a; /
答案
答案：B
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He is _________ man. He is _________ old man.[ ]
A. a; a
B. a; an
C. an; a
D. a; /
答案：B