用may,must,can,can't,should填空,
用may,must,can,can't,should填空,
一、选用may,must,can,can’t,should填空.
用should,may,can,must填空
用should,shouldn’t,must,mustn’t,needn’t,can’t ,may,have to 填空
用can,may,must,can't,mustn't填空.
用can,may,must,can't,mustn't 填空
用情态动词填空,can may must should.
用could,need,can't,may,must填空
一、请用情态动词(may、shall、should、can、can't、shouldn't、could、must、mus
选择适当的情态动词填空 can,may,must,shall,would,should,can't,mustn't,ne
用could,can,can't,must,mustn't need't may填空
选择合适的情态动词填空(should,may,can,must)