Question

---- It is a long time since I saw my sister.
----________  her this weekend?
Why not to visit              B. Why not visit    
C. Why not visiting             D. Why don’t visit

Answer 1

B

本题考查固定句型。why not+动词原形？="why" don’t you+动词原形？表达向某人提出建议，＂为什么不……？＂ ＂干吗不……？。