It has taken them half a year to build the bridge.改为同义句
问题描述：
It has taken them half a year to build the bridge.改为同义句
答
They taken half a year to build the bridge,
答
It has spent them half a year to build the bridge
答
They have built the bridge for half a year.
答
Building the bridge takes them half a year.
答
They spent half a year to build the bridge.
答
人们花了半年的时间将这座桥建成