-Have you ever been to Shanghai Mary? ---Yes. I there for a week with my parents last

问题补充：

---Have you ever been to Shanghai, Mary?

---Yes. I there for a week with my parents last month.

A. have been

B. have gone

C. went

D. was

答案：

A. have been

B. have gone

C. went

(答案→)D. was

解析：根据答语句末时间状语last month可知，是指上个月在上海呆了一周，该用一般过去时，选D，表状态。