Answer:
If you lose me you may cause people around you to lose me too.
I help engines spin and pants stay up
What has a head and a tail but no body?
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 am a room that has a roof but no walls. What am I?
If itโs information you seek, come and see me. If itโs pairs of letters you need, I have consecutively three. What am I?