问题
单项选择题
Do you know what were the（）books in America last year?
A.best-sold
B.best-sell
C.best-sale
D.best-selling
答案
参考答案：D
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Do you know what were the（）books in America last year?
A.best-sold
B.best-sell
C.best-sale
D.best-selling
参考答案：D