I had no idea how it that he should have been late for class three times a week.
A. came across
B. came about
C. came out
D. came down
网友回答
A. came across
(答案→)B. came about
C. came out
D. came down
解析：句意: 我不知道他一星期竟然迟到三次是怎么回事? e about 意思为“产生；发生”, 是不及物动词词组，相当于happen。e across偶然发现；碰见；e out出来；出版；e up出现；走过来；被提出。