她的问题源于童年。

Her problems ___stem ___from childhood.

这种教育方法源于强烈的家庭价值观和宗教信仰。

This educational approach ___stems ___from strong family values and religious beliefs.

这场冲突源于双方之间的误解。

The conflict ___stemmed ___from a misunderstanding between the two parties.