Can you claim foster kids on taxes?

uh guys....my L did NOT have a SSN when she came to me, so it IS possible. But there was also a mistake with the BC...as in she didn't have one done either. So no BC no SSN either....SS looked and no she didn't have one when I asked. They would have needed a tax ID number. That's what I'm using for L even though she has been adopted but I could not get a SSN without an amended birth certificate and it just came in the mail this week.