—Sorry I can’t go camping with you. I have to get ready for tomorrow’s exam—. We can do i

问题补充：

—Sorry, I can’t go camping with you. I have to get ready for tomorrow’s exam

—. We can do it together next time.

A. No problem

B. Yes, you are right

C. Good luck

D. You are welcome

答案：

A. No problem

B. Yes, you are right

(答案→)C. Good luck

D. You are welcome

解析：情景交际。No problem没问题；Yes, you are right是的，你是对的；Good luck 祝你好运；You are welcome不客气。句意：抱歉，我不能和你去野营了。我必须得准备明天的考试。联系下文，我们可以下次一起去。可知选C最符合语境。

Good luck! 用来表示祝愿对方考试好运。