It'salready10o'clock.Iwonderhowit________thatshewastwohoursla

It's already 10 o'clock. I wonder how it ________ that she was two hours late on such a short trip.A.came overB.came outC.came aboutD.came up

C解析句意：现在已经10点了。我真纳闷如此短的旅程她竟然晚了两个小时。come over--①make a short informal visit顺便来访；②to be effective and well received产生效果，被接受，被理解。如：Come over and see us tomorrow.请明天过来看看我们。Your talk came over very well.你的讲话很受欢迎；come out意为“出现，传出，（污渍）被洗掉”等；come about--to happen, esp. in a way that seems impossible to prevent发生。如：How did this dangerous situation come about?这样危险的局面是如何出现的？Can you explain how it came about that you were an hour late?你怎么会迟到一小时，你能对此做出解释吗？come up意为“走近，走到跟前，接近”。综上所述，C项为正确

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