— Would you mind my using your car?—. Here is the key.A. Of courseB. Not at allC. Certainl

问题补充：

— Would you mind my using your car?

—. Here is the key.

A. Of course

B. Not at all

C. Certainly

D. Sorry

答案：

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。