I didn’t get into the two-hour quarrel; I know how it , though.
A. would break out
B. has broken out
C. was breaking out
D. had broken out
网友回答
A. would break out
B. has broken out
C. was breaking out
(答案→)D. had broken out
解析：吵架是过去的事情，它发生应该是过去的过去，所以用过去完成时。