回複：請問現在婚姻綠卡申請多久能被批準？謝謝

My situation is:
I got the GC almost two months ago. My hu*****and filed his i-485 as a derivative beneficiary( similar to follow-to-join). Currently, he has f1 visa.
He did his finger print early this month.
Normally, how long will it take?

Sorry, I could not type Chinese on my working computer.
And I know my question maybe silly.
I just wanna know a few examples.
Thanks for anybody's response.