---We could invite John and Barbara to the Friday night party.
---Yes, ? I’ll give them a call right now.
A. why not
B. what for
C. why
D. what
网友回答
(答案→)A. why not
B. what for
C. why
D. what
解析：A. why not为什么不 B. what for 为什么 C. why为什么 D. what什么；句意：我们能要求John 和 Barbara星期五晚上来参加聚会吗？是的，为什么不叫呢？我会立刻给他们打电话。故选A