---Shall we go there by boat for a change?---.A. You sayB. It is up to youC. It is hard to

问题补充：

---Shall we go there by boat for a change?

---.

A. You say

B. It is up to you

C. It is hard to say

D. It is easy to tell

答案：

A. You say

(答案→)B. It is up to you

C. It is hard to say

D. It is easy to tell

解析：情景交际。You say 你说过；It is up to you由你决定； It is hard to say难说；It is easy to tell很好说。根据上文，我们乘船去哪儿换换环境吗？可知选B最符合语境。