问题
选择题
There are so many CDs that I don't know ______. [ ]
A. to buy which one
B. which to buy one
C. which one to buy
D. to buy one which
答案
答案：C
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There are so many CDs that I don't know ______. [ ]
A. to buy which one
B. which to buy one
C. which one to buy
D. to buy one which
答案：C