--Why not join us in the game Kitty?- but I have to do my homework first. ALet’s g

问题补充：

--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

答案：

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。