"It has been ten years since he was a teacher."这句话有什么错误?可以怎么改?

The man has been dead for ten years(同义句） It”s ten years__the man__ The film has been on for ten minutes.(保持原句意思）It is ten minutes___the film___. It has been ten years since I ___(be) a teacher. It is ten years since the house （）（build）动词填空.是has built 还是has been built? I’m sorry you’ve missed the train.It ten minutes ago.A.left B.has left C.has been away D.has been left It is ten years since Miss Green returned to Canada为什么不用It has been ten years since Miss Green returned to Canada i doubt it though yea whats up how have you been It's ten years since we last met in Beijing?句型中is能否用has been来替换 It has been ten years since he was a teacher.这句话有什么错误?可以怎么改? （ ）.--We are late for the conference.It_____ for ten minutes.--So it has.Hope the manuagerwon't be angy.A.has started B.has been on C.has been over D.began it has been since.用法 It has been in my it is/has been= It's has been accepted it has long been assumed The train has been here ten minutes.改错 The train has been here ten minutes.改错 My grandfather has been _______ for ten years (die)