—Excuse me, Professor Smith, I was wondering if I could leave a quarter earlier today.
— .
A. Nothing the matter.
B. Sure, go ahead
C. Oh, why not?
D. Of course, no problem.
网友回答
A. Nothing the matter.
(答案→)B. Sure, go ahead
C. Oh, why not?
D. Of course, no problem.
解析：考查交际用语。A容易的事；没有什么；B好的，去做吧！C为什么不？D当然了，没有问题。句意：—对不起。斯密斯教授，我想知道今天是否我可以早一点离开？—当然，可以。根据句意说明B正确。