I must （can't/isn't)see a doctor 换He 做主语 是不是都不用第三人称单数 为什么?那I do not like doctors为什么He doesn't like doctors

He isn't in the school .I think he __be ill.A.can B.must为什么? He isn't in the school .I think he_____be ill.A.must.B.can C.could He isn't at school .I think he ( )be ill.can,shall,must,has to ,原因. I think he must be in the office now,______?A.don’t I B.mustn’t he C.isn’t he D.can’t hethe reason,please! I think it great to see documentaries.A./;isn't B.don't;isn't C./;doesn't D.don't;is1.I think it great to see documentaries.A./;isn't B.don't;isn't C./;doesn't D.don't;is A还是D2.but you wash your hands firstA.may B.must C.can D.need ---Isn't that Ann's husband over there?---No,it___be him---I'm sure he doesn't wear glassesa:can'tb:must notc:won'td:may not sometimes,i hurt you.but that isn't my heart.i want you can forgive me.now,i must sayi'm sorry是什么意思 must i go to the doctor's?No yuoneedn't ,mustn't ,can't ,must There isn’t much that I can tell That must be a mistake,___ it?A mustn't B can't C isn't 选什么,为什么? i ( )swim.A,aren't B,am not C,can't D,isn't i think he must be a teacher,isn't he 这句反义疑问句为什么这样变?i think he must be a teacher,isn't he 这句反义疑问句为什么这样变?为什么不是mustn't he?i think he can be a teacher反义疑问句是不是i think he can be Can I have （any/some ) meat?Sorry,you can‘t There isn ’t(any/some) my MP4 player isn't in my bagMy MP4 player isn't in my bag.Where _____ I have put it?[ ]A.can B.must C.should D.would 为什么选A? I must （can't/isn't)see a doctor 换He 做主语 是不是都不用第三人称单数 为什么?那I do not like doctors为什么He doesn't like doctors Lily isn't at home．I believe she ________ be at her sister's home．A.can B.need C.may D.must Lee isn't in the classroom.i am sure he ____be on the play-ground now.A can B may C must D should i didn't break the window.It __ the truth.He is lying.can't be mustn't be shouldn't isn't 选哪个A.can't be B.mustn't be C.shouldn't be D.isn't