The dogs ____ ,the childen went by without fright.
问题描述：
The dogs ____ ,the childen went by without fright.
A.killing B.killed C.being killed D.having been killed
但我想知道为什么?
为什么是having been
答
D,狗被杀死了.
the childen went 中went是过去时,够被杀,肯定是过去完成时.