He must be in the room,___ he? 如何做?为什么?

I saw he went into the room.He must be in the room,_____ 反义疑 he must be in the room ,because the light in the room is 麻烦He must be in the room,because the light in the room is___ He ___ be in the room .The light in the room is not on.A.mus 高中反义疑问句He must go now,_____?He must be in the hospital,___?H He said that he ___(leave) his book in the room .如何填? He must be in his room now ,_____? Oh,there's someone in the room.( )must be my brother A.He B. He must be in the room.改成反意疑问句怎么改? The light is on in his room ,I'm sure he ___back A.must be B He must be in the classroom ,___he? He must be in the office,______he?