问题补充：
— Could you please tell me?
—Tomorrow morning.
A. how I can get to the post office
B. how long can I keep the book
C. when to leave for Beijing
D. where I should take the early bus
答案：
A. how I can get to the post office
B. how long can I keep the book
(答案→)C. when to leave for Beijing
D. where I should take the early bus
解析： 略
