I sense that there's a change in the way people relax through____the change这里为什么是has been taking place而不是takes place?

I sense that there's a change in the way people relax through____the change这里为什么是has been taking place而不是takes place?
I sense that there's a change in the way people relax through____the change
这里为什么是has been taking place而不是takes place?

I sense that there's a change in the way people relax through____the change这里为什么是has been taking place而不是takes place?
现在完成进行时 表示已经在改变,而且现在也在改变