Answer:
I am always around you but often forgotten. I am pure and clean most of the time, but occasionally rotten. What am I?
Sometimes I fly as fast as the speed of light. Sometime I crawl as slow as a snail. Unknown until I am measured but you will certainly miss me when Iām gone.
Four fingers and a thumb, yet flesh and blood I have none. What am I?
I help engines spin and pants stay up.
What language does a billboard speak?
What never gets any wetter no matter how hard it rains?