Question

----Mary won the first prize in the competition.

----_________. She said she made several terrible mistakes.

A.I think so.                    B. You’re welcome.

C. You must be kidding!          D. It doesn’t matter.

Answer

C

【解析】

试题分析：I think so 我想是这样；You must be kidding你在开玩笑吧；You are welcome欢迎你，不客气； It doesn’t matter没关系。句意：---Mary在比赛中获得了一等奖。---你一定在开玩笑吧。她说她犯了严重的错误。可知选C最符合语境。

考点：考查交际用语。