---I’m going to take part in the piano petition next week.
---
A. Congratulations！
B. Good luck！
C. Not at all！
D. With pleasure.
网友回答
A. Congratulations！
(答案→)B. Good luck！
C. Not at all！
D. With pleasure.
解析：下个星期我要参加钢琴比赛了。回答 A 祝贺你 应该是成功之后用 B 祝你好运 C D 回答谢谢的回答。