When I called you this morning, nobody answered the phone. Where ?
A. did you go
B. have you gone
C. were you
D. had you been
网友回答
A. did you go
B. have you gone
(答案→)C. were you
D. had you been
解析：句子的前半句说上午打电话时没有人接电话，而后半句问对方当时在什么地方。显然，句子前后两部分的时间应一致，即用一般过去时。