问题
选择题
I have _____ eraser _____ my pencilcase. [ ]
A. a; in
B. a; at
C. an; in
D. an; at
答案
答案：C
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I have _____ eraser _____ my pencilcase. [ ]
A. a; in
B. a; at
C. an; in
D. an; at
答案：C