-It is a long time since I saw my sister.-- her this weekend?Why not to visit B. Wh

问题补充：

---- 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

答案：

解析：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……？。