must we ____(start)the work at once ?求详细讲解 讲方法

we must start tomorrow morning. must we ____(start)the work at once ?求详细讲解 讲方法 I don't know when we shall start.(改为简单句) I don't know ____ ____ ____. Must we 【start】 the work at once __(不管怎样),we must start now. We don`t know when we shall start .(改为to do 的结构） We don`t know when ____ _____.说出语法！to start We must keep ____(health) we must ____ friendly____ visitors we ____(start) for Shanghai this afternoon must反意疑问句的用法you must start now,____?A.mustn't you B.dont;you 选A还是选B? ①We must get to school on time.We mustn't ____①We must get to school on time.We mustn't ____ ______ for school.②l don't care for shrimp.l____ the ____ of shrimp. we must not only think ____(we) This is a ____ street.Don't turn round.We must go straight. If we don’t start out now, we must risk ________ the train．拜托了各位 谢谢A. miss B. missing C. being missed D. to miss We don’t mind when ___(start). 改错 1.Yesterday Jack arrived to Beijing.____ 2.Must we clean the room now?No,you mustn't.____ When a light turns red,we ____ croos the road .a.must b.mustn't c.can d.can't We must start to do the work right now____we don't have enough timea.because b.whenc.ifd.though今天急用.