题目内容

--- How much did it cost?

--- It's free.


  1. A.
    having time
  2. B.
    too much
  3. C.
    costing nothing
  4. D.
    having freedom
C
free既可以指“空闲的;自由的”,也可指“免费的”。根据前一句“这个多少钱?”可以判断此处意为“免费的”。故选C项。
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