---I will go to Guangzhou this summer vacation.
--- .
A. You are wele
B. Sorry to hear that
C. Have a good trip
D. Congratulations
网友回答
A. You are wele
B. Sorry to hear that
(答案→)C. Have a good trip
D. Congratulations
解析：考查交际用语。You are wele 不用谢，Sorry to hear that听到那个我很伤心，Have a good trip 祝你旅途愉快，Congratulations 祝贺你。句意：今年暑假我将去广州。祝你旅途愉快。故选C。