题目内容

They are still building the new road.They ________ it so far.


  1. A.
    didn't finish
  2. B.
    don't finish
  3. C.
    haven't finished
  4. D.
    hadn't finished
C
so far意为“到目前为止”,常与完成时连用,又因第一句中谓语用“are”,可知应用现在完成时,故选C。
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