---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：考查交际用语：A. why not 为什么不？好啊，B. what for为了什么？C. why为什么？D. what 什么？句意：--我们可以邀请约翰和芭芭拉去星期五的晚会。--是，好啊，我现在给他们打电话。选A。