--- Excuse me, sir. Would you do me a favour?
--- Of course. What is it?
--- I if you could take me to the station.
A. would wonder
B. did wonder
C. was wondering
D. had wondered
网友回答
A. would wonder
B. did wonder
(答案→)C. was wondering
D. had wondered
解析：某些动词（如：wonder, hope, think等）常用过去进行时表示委婉的语气。