Answer:
I am commonly abbreviated to H
I ask no questions but receive a lot of answers
Mr. Red lives in the red house. Mr. Blue lives in the blue house. Mrs. Pink lives in the pink house. Who lives in the white house?
You throw me out when you want to use me, but take me in when you don’t want to use me. What am I?
I am long and slim works in light. Has but one eye and an awful bite.
What made Cyclops quit teaching?