I don't know why Jack is worried;___,it isn't his his problem.

I don't know why Jack is worried;___,it isn't his his problem.
I don't know why Jack is worried;___,it isn't his his problem.

I don't know why Jack is worried;___,it isn't his his problem.
However 然而
祝你新年快乐,学习更上一层楼!请记得采纳,谢谢!(*^__^*)

anyway [ 'eniwei ] adv. 无论如何，不管怎样；总之
anyhow [ 'enihau ] adv. 总之；无论如何；不管怎样
我不知道为什么杰克会担心，不管怎么说/无论怎么样，这都不是他的问题。

我不知道为什么杰克会担心，不管怎么说/无论怎么样，这都不是他的问题

anyway 不管怎样 我不知道杰克为什么担心，不管怎样，这都不是他的问题