Answer:
I am three simple words everyone wants to hear. Three simple words such simple words and yet...life changing...
I run through hills. I veer around mountains. I leap over rivers and crawl through the forests. Step out your door to find me. What am I?
I may be made of metal bone or wood and have many teeth. My bite hurts no one and the ladies love me.
What goes through towns and over hills but never moves?
Iron roof, glass walls, I burn and burn but never fall. What am I?
What is always coming but never arrives?