问题补充：
It`s already 10 o`clock. I wonder how it that she was two hours late on such a short trip.
A. came over
B. came out
C. came about
D. came up
答案：
A. came over
B. came out
(答案→)C. came about
D. came up
解析：考查动词短语。A.came over过来；突然感到；顺便来访B.came out出来；出现；出版C.came about发生；改变方向 D.came up升起；靠近，被讨论；长出。句意:已经10点钟了，我想知道这么短的旅程她迟到了两个小时是怎么回事？故选C
