问题补充:
--- he at this school last term?
--- Yes, I think so.
A. Did, study
B. Has , studied
C. Was , study
D. Did , studied
答案:
(答案→)A. Did, study
B. Has , studied
C. Was , study
D. Did , studied
解析:句意:上学期他在校学习了吗?是的,我认为是这样。last term上学期,是过去的时间状语,要用过去式,study是实义动词,所以找助动词did,故选A。