选词填空 can can't must needn't

选词填空 can can't must needn't 用should,shouldn’t,must,mustn’t,needn’t,can’t ,may,have to 填空 几个选词填空,must 、can、mustn't、can't 用适当的情态动词can,may,must,mustn’t,needn’t填空 将下列句子改成否定句和疑问句,用can,may,must,can't,mustn't,needn't填空 can,can't,must,mustn't,needn't,be allowed to,have to,don't h 为什么must的否定式要用can’t或者needn’t?may要用can’t 用must,can,can't,needn't,has to,have to,had to,will,造句 Complete the conversations with can,can't,may,must,needn't 选词填空（can't have been\must be\must have been\can't be \may ha you must clean the classroom,you?a.needn’t b.mustn’t c.can’t 用can,must,can't,mustn't填空