._ much advice I gave him he did exactly what he wanted to do.A. How　　B. Whatever　　C. How

问题补充：

._ much advice I gave him, he did exactly what he wanted to do.

A. How

B. Whatever

C. However

D. No matter

答案：

A. How

B. Whatever

(答案→)C. However

D. No matter

解析：however同形容词或副词连用 no matter how 引导一个让步状语从句。