问题补充：
--- I’ve been waiting for you for an hour! Where have you been?
--- . It’s rush hour now, you know. The traffic is too bad.
A. It doesn’t matter
B. Be careful
C. Sorry about that
D. What a pity
答案：
A. It doesn’t matter
B. Be careful
(答案→)C. Sorry about that
D. What a pity
解析：本题是情景反应，只有C符合题意。
