Walter offered us a lift when he was leaving the office,but our work__,we declined the offer.

题目

Walter offered us a lift when he was leaving the office,but our work__,we declined the offer.
A.was not finished B.did not finish C.has not been finished D.not having been finished
选哪个?为什么?

答案

Walter offered us a lift when he was leaving the office,but our work__,we declined the offer.选择d句子可以看成：Walter offered us a lift when he was leaving the office,but we declined the offer.but 后...