Question

I was caught in a traffic jam for over an hour, otherwise I _________ you waiting for such a long time.

A. will not keep    B. have not kept

C. had not kept    D. would not have kept

Answer

D

【解析】考查虚拟语气。句意：我遇到堵车长达一个多小时，否则我不会让你等这么久的。Otherwise“否则”是解题的关键，相当于虚拟语气的从句“如果不堵车”，那“我就不会让你等”考查的是主句。从was可以判定出与过去相反，主句要用would have done，表示否定用 would not have kept。综上，D选项正确。