They left Fuzhou five years ago.同义句转换 ：
问题描述：
They left Fuzhou five years ago.同义句转换 ：
It __ five years __ they ___ Fuzhou.
It __ __ five years __ they __ Fuzhou.
答
It has been five years since they left Fuzhou.
It was five years since they left Fuzhou.[不确定]