A)With pleasure.
B)Thanks for telling me.
C)Well,I'd like to.But I'm busy.
原文：
感谢大耳朵网友"旺旺小小苏"提供的听力原文!
David is your foreign friend . He says to you: I'd like to go to the bookshop this Saturday,but you know. I'm poor in Chinese, so I'll need your help. Could you come along with me?
Question: What would you say if you could go with him?