—Jim came back home last night. —Really? Where at all?A. had he beenB. has he beenC. had

问题补充：

—Jim came back home last night. —Really? Where at all?

A. had he been

B. has he been

C. had he gone

D. has he gone

答案：

(答案→)A. had he been

B. has he been

C. had he gone

D. has he gone

解析：因came是过去时，而问的是Tom回来之前去哪里了，即“过去的过去”，用过去完成时；have been…去过某地(已回来)，have been…到某地去了(没回来)。