--Why not join us in the game, Kitty?
--- , but I have to do my homework first.
ALet’s go
B. I’d love to
C. Yes, please
DIt’s a pleasure
网友回答
A. Let’s go
(答案→)B. I’d love to
C. Yes, please
D. It’s a pleasure
解析：why not +动词原形表示为什么不…用来表示建议。I’d love to是其固定答语的一种形式。