Musn't 为什么不可以写成 Must'nt或者 Mustn't

Musn't 为什么不可以写成 Must'nt或者 Mustn't must的回答什么时候用musn't ______it be true ,Tom?-“No,it______.”A.Can,can’t B.Can,musn't C.May,can’t D.Must,can’t为什么要选C啊?A不也可以吗?这种语气强弱的问题好难判断啊!我怎么知道语气是不是强还是弱,真无聊.或者有别的判 哪位神可以告诉我must/can/may/need/should/musn`t/can`t/shall的用法,大脑混乱ing. must not 的缩写是mustn’t还是musn’t? must的否定式是musn't还是mustn't -Do you know the man___is talking with your father?--Yes,He`s our headmaster.A.must can't B must为什么 不能选b 第二个空是musn‘t 为什么写成be at homeHe must be at home now.这一句里为什么不写成 He must be home now.be后面不是可以直接接副词吗? can、may、must开头的问句怎么回答?can't和musn't有什么区别? You must do it even if you don't want to.可以写成：You must do it even if you don't want to do.或You must do it even if you don't want.为什么? Must he come to receive the prize himself?No,he__A.musn'tB.needn'tC.can'tD.shouldn't -_I take the newspaper away?-No,you musn't.You_read it only here.A.Must;canB.May;canC.Need;mustD.Must;must并解析 You must have seen him off yesterday,A.haven't you B didn't you C.musn't you D needn't you答案选 musn‘t和 don't 的用法 You ____ clean the room now.You ___ do it after supper.A.won't,must. B.don't have to,may. C.needn't,must. D.shouldn't,can为什么选B,其他三个为什么不可以?原因,谢谢! 关于虚拟语气的单选题.His failure in the experiment suggested that he _____his teacher's proper instructions.A musn't have followed B.hadn't followed.只是一个陈述句的语气.为什么不能用A啊. 丙烯,为什么一定要写成CH2=CH-CH3,可以不可以写成CH3-CH=CH2 Must wu do shomthing to keep our city clean?_______ a.yes we need b no you needn'tc.no you musn't d.yes of couse