She came to the city two years ago.(保持句意)

问题描述:

She came to the city two years ago.(保持句意)
She _______ _________ in the city for two years.

has been
上句说的是:她两年前到这个城市.用的是过去式表示动作发生在过去.
同义句为:她在这个城市两年了.用的是现在完成时,表示动作发生在过去并对现在产生影响.