问题补充：
, I have never seen anyone who’s as capable as John.
A. As long as I have
B. Now that I have traveled so much
C. Much as I have traveled
D. As I have traveled so much
答案：
A. As long as I have
B. Now that I have traveled so much
(答案→)C. Much as I have traveled
D. As I have traveled so much
解析：从逻辑关系看，选项是让步状语从句，排除A、B项；as引导让步状语从句时，从句中用倒装语序。故选C。
