—Have you ever been to Shanghai?—Yes. I there a few months ago.A. have been B. went C. ha

问题补充：

—Have you ever been to Shanghai?

—Yes. I there a few months ago.

A. have been B. went C. have gone

答案：

解析：句意：你去过上海吗？是的，几个月之前我去过那里。a few months ago，几个月以前，过去的时间点，故用过去时态。现在完成时不会和具体的时间点连用。故选B