— Would you mind my using your car?
— . Here is the key.
A. Of course
B. Not at all
C. Certainly
D. Sorry
网友回答
A. Of course
(答案→)B. Not at all
C. Certainly
D. Sorry
解析：Of course当然了； Not at all一点也不；Certainly当然，行；Sorry抱歉。句意：你介意我用你的汽车吗？根据下文，给你钥匙。可知选B最符合语境。