—Have you ever been to Shanghai Mary?—Yes. I there for three days with my parents last y

问题补充：

—Have you ever been to Shanghai, Mary?

—Yes. I there for three days with my parents last year.

A. have gone

B. have been

C. went

D. was

答案：

A. have gone

B. have been

C. went

(答案→)D. was

解析：last year去年表示过去时间，因此要求谓语动词要用过去时，又因for three days是段时间因此谓语动词必须要有延续性，故用was选D.