1.----------full preparations,we decided to put off the meeting till next week.

问题描述:

1.----------full preparations,we decided to put off the meeting till next week.
A.We did not make B.Having not made
C.We had not made D.Not having made
为什么?

选D,非谓语动词作原因状语,因为作准背发生在开会之前,所以用完成体