Katherine's eyes _______with tears when she knew her mother needed ______.

问题描述:

Katherine's eyes _______with tears when she knew her mother needed ______.
A.was filled ; being operated on
B.was filled; to operate
C.filled ; operating
D.filled; operating on
为什么选D?
为什么在这里一定要用主动表被动?being operated on为什么不对?

第一个眼里含满泪水当然要用主动
第二个opear on固定搭配