—Has your son come back from abroad for the winter vacation?—Yes. But he stayed at home fo

问题补充：

—Has your son come back from abroad for the winter vacation?

—Yes. But he stayed at home for only a week. Now heback to college.

A. went

B. has gone

C. was going

D. will go

答案：

A. went

(答案→)B. has gone

C. was going

D. will go

解析：考查时态。根据上下文可知儿子已经回大学了。