Answer:
I transfer oxygen from the atmosphere to your blood
You will always find me in the past. I can be created in the present, but the future can never taint me. What am I?
I go through a door but never go in, and never come out. What am I?
I am the only thing that place today before yesterday. (one word)
As I went over London Bridge I met my sister Jenny; I broke her neck and drank her blood and left her standing empty.
The virgin gave birth to a child and threw away the blanket.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic