The decision , the next problem was how to make a good plan.
A. made
B. being made
C. to be made
D. having been made
网友回答
A. made
B. being made
C. to be made
(答案→)D. having been made
解析：
这题考查独立主格结构，the decision是逻辑主语，和make是被动的关系，而且是决定作出后，下个问题是怎么制定计划，所以填现在分词的被动完成式。整个独立主格结构做状语。选D。