Answer:
I repeat only the last word you say. The more I repeat, the softer I got. I cannot be seen but can be heard. What am I?
I always go to bed with my shoes on.
What has keys but no locks a space but no room and you can enter but can't go in?
I run smoother than any rhyme I love to fall but cannot climb.
I march before armies a thousand salute me. My fall can bring victory but no one would shoot me. The wind is my lover one-legged am I. Name me and see me at home in the sky.
Before Google, we actually had to physically look things up in this building full of knowledge.