She has been a nurse for five years(改为同义句) It ___ ____ five years since she became a nurse.
问题描述：
She has been a nurse for five years(改为同义句) It ___ ____ five years since she became a nurse.
只有两个空格,该怎么填
答
应该是：
has been
她成为护士已经五年了对吗？当然对了，呵可这里是对时间做出的完成时