Answer:
I am the kind of nut that is empty at the center and has no shell.
I am an instrument that you can hear but cannot see or touch. What am I?
I spend most of my day eating white. When I am quick enough I get rewarded with fruit and something blue. In a dark room with blue walls I run from the ghosts that roam the halls
I go inside boots and outside shoes.
I go around in circles, but always straight ahead. Never complain, no matter where I am led. What am I?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?