我们买了钢琴是为了孩子们的利益。

We bought the piano ___for ___the ___children's ___benefit.

她希望她的钱被用于帮助贫困儿童。

She wanted her money to be used ___for ___the ___benefit ___of poor children.

新政策的实施是为了所有员工的利益。

The new policy was implemented ___for ___the ___benefit ___of all employees.