__________,He still found his way to his home

问题描述:

__________,He still found his way to his home
A.As was the night dark
B.As the night was dark
C.Dark as was the night
D.Dark as the night was

as引导的倒装句,形容词提前,意为:尽管夜很黑,他还是找到了回家的路.那as引导的是什么从句呢?让步状语从句很感谢。