请将单词连词成句
问题描述：
请将单词连词成句
usully,time,spend,qn,families,weekends,together
wants,sky,to,up,fly,into,ken,the
were,robots,no,in,there,factory,the
答
Families usually spend time together on weekends.
Ken wants to fly up into the sky.
There were no robots in the factory