—Could you tell me what time the train leaves Xiangyang for Beijing?—Sorry I don’t know

问题补充：

—Could you tell me what time the train leaves Xiangyang for Beijing?

—Sorry, I don’t know, either. You can on the Internet.

A. look for it

B. look at it

C. look it over

D. look it up

答案：

A. look for it

B. look at it

C. look it over

(答案→)D. look it up

解析：look for it 寻找它；look at it 看它；look it over检查，看了又看；look it up查阅，查找。句意：你能告诉我什么时候这趟火车离开沈阳去北京吗？——抱歉，我也不知道。你可以在网上查阅一下。结合语境可知选D。