The radio set _ last week has been out of order.A. I bought B. I bought itC. which I boug

问题补充：

The radio set _ last week has been out of order.

A. I bought

B. I bought it

C. which I bought it

D. what I bought

答案：

(答案→)A. I bought

B. I bought it

C. which I bought it

D. what I bought

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