were doing和are doing

题目

were doing和are doing
I can guess you were in hurry.You___you sweater inside out
A.had worn B.wore
C.were wearing D.are wearing
为什么？

答案

were doing一般来说表示过去某一时间点正在做某事,也可以表示过去经常做某事.
are doing表示现在正在做某事.
注意：上面两组均为复数形式.