----I thought you wouldn’t mind.
----Well, as a matter of fact I don’t, but you me first.
A. should ask
B. should have asked
C. must ask
D. must have asked
网友回答
A. should ask
(答案→)B. should have asked
C. must ask
D. must have asked
解析：should 后接动词完成式表示“本来应该做某事，结果未做”，此处含有责备之意。