they looked, they saw nothing but ruins after the terrible earthquake.
A. Whichever
B. Whatever
C. Wherever
D. However
网友回答
A. Whichever
B. Whatever
(答案→)C. Wherever
D. However
解析：句意：地震后，无论他们看哪里，都是废墟。这里是wherever引导让步状语从句“无论哪里”相当于no matter where，A. Whichever无论哪个，B. Whatever 无论什么， D. However无论怎样，都不符合句意，所以选C。