---It’s a long time since I saw my sister.
--- her this weekend?
A. Why not visit
B. why not to visit
C. Why not visiting
D. Why don’t visit
网友回答
(答案→)A. Why not visit
B. why not to visit
C. Why not visiting
D. Why don’t visit
解析：Why not...? 意为“为什么不……呢？”用于提出建议。Why not后面必须接动词原形，即“why not do...?”。