---Harry Potter Ⅶ will be on this Saturday evening. Would you like to go to see it with me

问题补充：

---Harry Potter Ⅶ will be on this Saturday evening. Would you like to go to see it with me?

--- No, thanks. I it.

A. see

B. have seen

C. saw

D. will see

答案：

A. see

(答案→)B. have seen

C. saw

D. will see

解析：根据答语内容No, thanks，可知之前已经看过了，故选答案为B，表示已经···。