根据句意用can,could,must can't填空

用could,need,can't,may,must填空 用could,can,can't,must,mustn't need't may填空 （有2题）一、根据要求答题 二、用could、can、may、must、needn't填空 must,might,could,can't的区别 must ,might ,could ,can't的用法? 根据语境,用can,may,might,can't,must,mustn't等情态动词填空 根据句意,选用can,can't,must .have to has to或has to 填空. 用can,must,can't,mustn't填空 用can/can't;must/mustn't填空 用must,mustn't,can,can't填空 几个选词填空,must 、can、mustn't、can't 选词填空 can can't must needn't