---It’s very nice of you to help me solve such a big problem.
--- .
A. That’s all right.
B. Don’t worry.
C. It’s my pleasure.
D. Take it easy.
网友回答
A. That’s all right.
B. Don’t worry.
(答案→)C. It’s my pleasure.
D. Take it easy.
解析：情景交际. That’s all right.没关系; Don’t worry.不要担心;It’s my pleasure.这是我的荣幸; Take it easy.放松点.根据上文,帮我解决如此一个大的难题,你真是太好了.结合语境可知选C,