Will you stay for lunch?

问题描述:

Will you stay for lunch?
Sorry,______.My brother is coming to see me.
A.I mustn’t B.I can’t C.I needn’t D.I won’t

Sorry,______.My brother is coming to see me.
A.I mustn’t B.I can’t C.I needn’t D.I won’t 选B因为can't语气是非常委婉的,有可能的意思,其余三个选项都不合适.A语气太强烈了,C意思是不需要,D就更加不可能了,他是过去式