问题补充：
—Would you mind if I open the door?
—
A. It doesn’t matter.
B. No, go ahead.
C. Yes, please.
D. Never mind.
答案：
A. It doesn’t matter.
(答案→)B. No, go ahead.
C. Yes, please.
D. Never mind.
解析：考查交际用语。A/D没关系；B不，去做吧！C是的，请！句意：—你介意我把门打开吗？—不，你去开吧！根据句意说明B正确。
