单选题 ______ Do you agree with what I said?
--I couldn't agree with you ______,that's really a good idea.
A. little B. much
C. more D. 不填

【正确答案】 C

【答案解析】[解析] 根据“that’s really a good idea”可知回答者持赞同态度，排除D项。“I couldn’t agree with you more”表示“我非常赞同”，符合题意，故选C。