they can help provide better lives for their parents 改为同义句
问题描述：
they can help provide better lives for their parents 改为同义句
they can help --------- their parent-------better lives
答
they can help --provide------- their parent---with----better lives.
they can help --supply------- their parent---with----better lives.
参考：
1、provide 有两种形式providesb with sth 或providesth for sb
2、supply 的用法supply sb．with sth或 supply sth．to ／for sb
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