have you__ to the Great Wall? a,visited b.been c.gone

b.
a.应为去掉to 因为visit在这里是及物动词。
visit英音：['vizit]美音：['vɪzɪt]
及物动词 vt.
1.
参观;拜访;探望
This afternoon we're going to visit a friend in hospital.
今天下午我们将去探望一位住院的朋友。
During our stay in London, we visited Buckingham Palace.
我们在伦敦逗留期间访问了白金汉宫。
2.
【美】在...处作客,暂住在
3.
视察
The prime minister visited several factories in our city.
首相视察了我市几个工厂。
4.
出诊

不及物动词 vi.
1.参观;访问
2.【美】暂住[(+with)]
Amy will come down and visit with you for a couple of days.
艾米会来你这儿作客住上几天。
3.逗留[Q]
He is visiting in Taipei.
他在台北逗留。
4.【美】【口】谈话
I saw him visiting with a neighbor.
我看到他在和邻居闲聊。

名词 n. [C]
1.参观;访问;探望
I paid a visit to my former English teacher.
我拜访了我以前的英语老师。
2.暂住,逗留
He met his future father-in-law during his visit to Boston.
他在波士顿小住期间遇见了他未来的岳父。
3.视察
4.出诊;就诊
5.【美】【口】闲聊
c.have been to:去过，已回来;have gone to:已去，未回
例句：新概念1中“paris in spring”：Have you been to the cinema?

visit 当动词时后面不加to，所以不填。
gone to的意思是人已经在路上，或到达目的地，这里也不符题意。
只有用been to才能表达去过某地，表示人已经回来。所以选B。

B没有疑问

B