Answer:
I march before armies, a thousand salute me. My fall can bring victory, but no one would shoot me. What am I?
A sport with love and service played by singles and pairs.
I have keys but no locks. I have space but no room. You can enter but can't go outside. What am I?
What do people spend a lot of money on every year, but never want to use?
I am quick when Iām thin. I am slow when Iām fat. Wind is my worst nightmare.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.