单选题 Man: How long does the journey take if I go by bus?
Woman: ______. I think the Airport Express is your best bet.
Man: Many thanks.
A. I don't know yet B. It depends on the traffic
C. Let me see D. You'll consider the distance

【正确答案】 B
【答案解析】[解析] 男人问女人这趟旅行要是乘坐汽车的话，需要多久。女人回答说，乘坐机场快车才是最好的选择。由此可知，女人回答了男人的问题，并给了自己的建议。所以正确的答案是B选项：旅行时间取决于交通状况。