问题补充:
—What did you say to your sister? I saw her crying in the room.
— It my fault. I just said hello to her when I met her, nothing else.
A. must have been
B. can’t have been
C. oughtn’t to be
D. should have been
答案:
A. must have been
(答案→)B. can’t have been
C. oughtn’t to be
D. should have been
解析:考查情态动词。Can’t have done不可能做某事。句意:——你对你姐姐说了什么?我看到她在房间里哭。——不可能是我的错吧。当我遇到她的时候,我只是向她问候了一下,其它什么也没说。故B正确。