问题
选择题
— Andy, are these your books?
— _____ [ ]
A. Yes, there are.
B. Yes, they are.
C. Yes, these are.
D. Yes, it is.
答案
答案：B
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— Andy, are these your books?
— _____ [ ]
A. Yes, there are.
B. Yes, they are.
C. Yes, these are.
D. Yes, it is.
答案：B