问题
选择题
I have __________ uncle. He works in __________ useful place.[ ]
A. a, a
B. an, an
C. an, a
D. a, an
答案
答案：C
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I have __________ uncle. He works in __________ useful place.[ ]
A. a, a
B. an, an
C. an, a
D. a, an
答案：C