That man _______ be Mary's father because he is much taller.A.can B.must C.can't D.mustn't请问B为什么不可以?

问题描述:

That man _______ be Mary's father because he is much taller.
A.can B.must C.can't D.mustn't
请问B为什么不可以?

从意思上,因为他要高的多,所以不可能是玛丽的父亲