问题
选择题
This is ________ eraser and that's ________ gold ring. [ ]
A.a, a
B.an, an
C.a, an
D.an, a
答案
答案：D
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This is ________ eraser and that's ________ gold ring. [ ]
A.a, a
B.an, an
C.a, an
D.an, a
答案：D