I think the doctor is able to care of is the matter with your son .
A. all
B. what
C. whatever
D. anything
网友回答
A. all
B. what
(答案→)C. whatever
D. anything
解析：whatever具备两个意思，其一是no matter what ,引导让步状语从句；其二是anything that ,引导名词性从句，在本题中，Whatever引导的是一个宾语从句，whatever在这个宾语从句被用作主语。