问题补充：
---. Is it five o’clock now?
---，I don’t know.
A. Sorry; Sorry
B. Sorry; Excuse me
C. Excuse me; Sorry
D. Excuse me; Excuse me
答案：
A. Sorry; Sorry
B. Sorry; Excuse me
(答案→)C. Excuse me; Sorry
D. Excuse me; Excuse me
解析：英文中问某人问题打扰对方，用Excuse me，但当不能帮助别人表示抱歉应用sorry，
故本题选C。
