The decision_____,the next problem was how to make a good plan.

问题描述:

The decision_____,the next problem was how to make a good plan.
a.having been made b.being made c.having made
逗号前的不分不能用独立主格吗?

A
make 和The decision 为被动关系,排除主动式C
从句子the next problem was “下一个问题是.” 可见,独立主格结构所表的动作完成在线,故用完成式