问题
选择题
I’ll never understand how it __________that you were late three times a week.
A．came about
B．came out
C．came across
D．came up
答案
答案：A
考查短语辨析。came about 发生，came out 开花，came across 偶然发现，came up 提出，句意：我根本不理解你一周迟到三次这是怎么发生的。