There was a traffic jam; otherwise I here on time.
A. would be
B. had been
C. should be
D. would have been
网友回答
A. would be
B. had been
C. should be
(答案→)D. would have been
解析：考查虚拟语气。这是一个含蓄条件句otherwise=If there had not been a traffic jam.因为前面是一个过去时，所以这里是表示和过去相反的虚拟语气，主句里面用情态动词+have done.