Studdents must sleep for about nine hours every night?（划线部分提问 for about nine hours）( )( )must students（ ）every night

Studdents must sleep for about nine hours every night? Studdents must sleep for about nine hours every night?（划线部分提问 for about nine hours）( )( )must students（ ）every night why we must sleep toniht you must sleep on the floor it is too late now,i must go to sleep why we must sleep very early can make us better? sleep sleep sleep sleep He must be sleeping.与He must sleep.有什么区别 He looks tired,he _______ too little sleep.A must have had B must have C must have been must be后面跟什么类形的动词 如must be 跟sleep还是asleep或者其他 英语翻译用keep sb doing 的句形You must keep you sleep. she must have gone to sleep ane ___about me and the dog.为什么填forgotten .How could you sleep last night?You （）must have heard the thunderstorm! i must find a place where i can sleep tonight 翻译中文 把下列句子变为祈使句You must not sleep in class.