问题
选择题
— Where are the books, please?
— They are _ A. [ ]
A. in shelf
B. in Shelf
C. on shelf
D. on Shelf
答案
答案：D
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— Where are the books, please?
— They are _ A. [ ]
A. in shelf
B. in Shelf
C. on shelf
D. on Shelf
答案：D