Answer:
Not my sister nor my brother but still the child of my mother and father. Who am I?
You are on an electric train. Which direction will the smoke fly in?
What should you do when you see a green man?
Rotten trees and Jack-O-Lanterns have this characteristic in common.
Come up and we go, Go down and we stay.
I am a room that has a roof but no walls. What am I?