问题补充:
–Look at that girl! Is it Susan?
--No, it be her. She has gone back to her hometown.
A. mustn’t
B. can’t
C. needn’t
D. wouldn’t
答案:
A. mustn’t
(答案→)B. can’t
C. needn’t
D. wouldn’t
解析:根据后文的内容:. She has gone back to her hometown.,可知她不肯能是上文中看见的人,故选B