英语问题.couldn't feel better

英语问题.couldn't feel better
-How did your interview go?
-I couldn't feel better about it!The questions were very fair, and I seemed to find an answer for all of them.
-How does the man feel?
答案是He is confident.
他不是说I couldn't feel better about it!吗?
那为什么答案是他很有信心?
http://zhidao.baidu.com/question/32498267.html?si=1
看看这个吧...真搞不清楚是什么情况...