Is that man Jim's father?NO,he__Jim's father.because Jim's father has gone to Beijing.

问题描述:

Is that man Jim's father?NO,he__Jim's father.because Jim's father has gone to Beijing.
A.mustn't be B.may be C.can't be 为什么选C呢?

表示“一定不.”要说can't be
mustn't be 的意思是“不准.”
may be 是“可能.”
从上下文来看,“因为吉姆的父亲已经去北京了”,所以那个人“不可能是吉姆的父亲”,选C