听下面每段对话或独白。每段对话或独白后有一到几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。听每段对话或独白前,你将有时间阅读各个小题,每小题5秒种;听完后,各小题给出5秒钟的作答时间。每段对话或独白读两遍。 Why was Joan on the underground train
A. She was going to work. B. She was coming home from wok. C. She was traveling to another city.