问题补充:
Sorry,Cathy,I didn’t know that you were badly short of money then.But you me for help.
A. must have asked
B. could have asked
C. would have asked
D. may have asked
答案:
A. must have asked
B. could have asked
C. would have asked
D. may have asked
解析:B
解析考查情态动词。说话人为自己不知道Cathy当时急需用钱而感到抱歉,认为Cathy当时本来可以向自己求助。could have done表示过去本来可以做某事,可实际上并没有做。