Answer:
Never ahead, ever behind, yet flying swiftly past; for a child, I last forever; for an adult, I'm gone too fast. What am I?
I stand in one place yet I fill a whole room. I can be filled with molten rock and come in every hue.
I am a sound made by felines when petted.
I am put on the table, cut, but never eaten. What am I?
I am clean when Iām black dirty when Iām white.
What language does a billboard speak?