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。