— I was worried about math, but Mr. Brown gave me an A!
— That’s a difficult course.
A. Have a good luck.
B. Not really.
C. Congratulations!
D. You do?
网友回答
A. Have a good luck.
B. Not really.
(答案→)C. Congratulations!
D. You do?
解析：这题考查交际用语：Have a good luck祝好运， Not really.不是真的， Congratulations!祝贺，You do?真的吗？句意是：--我担心数学，但是布朗先生给我一个A。--祝贺你，这是很难的课程。选C。