The CDs are on sale! Buy one and you get completely free．A.otherB.othersC.oneD.O
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The CDs are on sale! Buy one and you get _____ completely free．
A.other
B.others
C.one
D.Ones
试题答案
C
本题考查不定代词的用法。根据句意可知，CD在促销，应该是买一赠一。因此，选C项。