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You seem to have had that car for years．

-- Yes, I should sell it _______ it still runs．

A．before                    B．during                  C．until                       D．while

---You seem to have had that car for years.

---Yes, I should sell it ________ it still runs.    

—You seem to have had that car for years.  

---Yes, I should sell it ____ it still runs.

A. before       B. during        C. until     D. while

---You seem to have had that car for years.

     ---Yes, I should sell it ________ it still runs.    

      A. before                    B. during      C. until                     D. while

—You seem to have had that car for years.   ---Yes, I should sell it ____ it still runs.

  A. before   B. during  C. until   D. while