Answer:
I am in the past never in the future. I don't exist but have existed. I saw what you saw and that is what I will ever see.
I contain five little items of an everyday sort. You can find all five in a tennis court.
Teenage girls are pros at creating me. Learn me in classes.
You can read me both ways I wear; One way it's a number reversed a snare.
I like to twirl my body but keep my head up high. After I go in, everything becomes tight. What am I?
What is 9 added to any number ending in 1