I lost my way in complete darkness and,____ matters worse,it began to rain.

问题描述:

I lost my way in complete darkness and,____ matters worse,it began to rain.
A.made
B.having made
C.making
D.to make
为啥选D?

to make matters worse“更糟糕的是”是一种固定说法, 如:To make matters worse ,I don't think he's alone.
更糟糕是,我并不觉得只有他一个人有这种想法.