He must be in the office,______he?

He must be in the office,______he? I think he must be in the office now,______? 模仿例句改写句子.Example:He must be in the office.→He must have been he must be in the office.be换成is 可以么 He must't be in his office now.Isaw him in the street just n I think he must be in the office now,______?反意疑问句应该是什么? I think he must be in the office now,______?反意疑问句应该是什么?为什么 He must be in the classroom ,___he? Our teacher must be in his office,A mustn't he B can't he C 1.He never used to swim in the river,______he? He must do his homework,______he? It must be John who is in the office.I'm sure it()be John.Is