问题详情

Speaker A: I"m going to the park with some friends for a barbecue on Sunday. Would you like to join us？ Speaker B: ______
A．Why not on Saturday？ You see, I have an important appointment on Sunday.
B．Thanks, but unfortunately I have to take my sister to the airport on Sunday.
C．That"s a wonderful idea. Barbecue is one of my favorites.
D．What preparation do you expect me to do for the barbecue？请帮忙给出正确答案和分析，谢谢！