Question

—— Where ＿＿＿＿＿＿＿＿?
—— I got stuck in the heavy traffic, or I＿＿＿＿＿here earlier

1. A.
   did you go； had arrived
2. B.
   are you； would come
3. C.
   were you; would come
4. D.
   have you been； would have been

Answer 1

D
or引出的一个分句表示对过去的情况进行假设，故用would have done。