Answer:
I know a word of letters three. Add two and fewer there will be. What is the word?
You are my brother, but I am not your brother. Who am I?
I make everyone blind. You can't see me but I will always come back for you. What am I?
I cause involuntary movements in your vehicle
I am a mother from a family of eight. I spin around all day despite my weight. Had a ninth sibling before founding out it was fake. What am I?
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.