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 pass before the sun, yet make no shadow. I'm all around you, but you cannot see me. What am I?
My first two letters say my name. My last letter asks a question. What I embrace I destroy.
What is always in front of you but can't be seen?
Why are there no living cats on Mars?
What never gets any wetter no matter how hard it rains?