问题补充:
—Thanks a lot, but can you do me one more favor, please?
—, sir. What can I do for you?
A. Just a minute
B. It’s very nice of you
C. At your service
D. Not a bit
答案:
A. Just a minute
B. It’s very nice of you
(答案→)C. At your service
D. Not a bit
解析:考察交际用语。A请稍等;B你真是太好了。C乐意为你服务;D一点也不;句意:—多谢,你能再帮我一个忙吗?—乐意为你服务。我能为你做什么?根据句意说明C正确。