—eat out with us?—Good idea. A. What about B. Why not C. Would you like

问题补充：

—eat out with us?

—Good idea.

A. What about B. Why not C. Would you like

答案：

解析：本题表示是建议what about后应跟动名词doing，故不选，would like表示想要后应跟动词不定式to do，故不选，why not后跟动词原形，与题意相符，故选B.