Henry must have stayed up last night,_____he looks so tired and sleepy.选项中有as和for.答案是for,为什么不可以是as

Must she have to stay at home?改错 He will have to stay in hospital.That’s what he____a has done b must do c must be doing d must have done为什么C不对呢 I have a cold and I must stay in bed 请帮我翻译中文 用must,have to填空：I stay here for two hours.I ____ go now. 3Q ..I never had to say goodbye You must have known I wouldn ' t stay Must have been後面动词,形容词,分别接什麼形式?可以接副词麼?书上有句he must have been stay at home ,stay at home 它和 he must have stayed at home相同么? must stay in bed可以说成stay I've must have been blind.是否病句?I've must have been blind.两个have?该句出自Tonya Mitchell的Stay. Henry must have stayed up last night,_____he looks so tired and sleepy.选项中有as和for.答案是for,为什么不可以是as Henry Henry henry Henry Henry must have good night.i must go to bed.Don't stay up late.ok?have a good dream.good night.i must go to bed.Don't stay up late.ok?have a good dream.一个女孩的短信. it`s windy today,so we ____ stay at home 1.must 2.can 3.may 4.have to it is raining now .so ---stay at home.A.must B.have to C.must to D.can A和B他俩应该选哪一个说说说原