Answer:
Open me, and you can't see me without a mirror. Close me and you can't see me at all. What am I?
Blade to blade I always win My foe laid low and even. Yard by yard through thick and thin I'm busiest in season.
If two is company and three is a crowd, what is four and five?
You throw me out when you want to use me, but take me in when you donβt want to use me. What am I?
I can be cracked, made, told, and played. What am I?
Give it food and it will live, give it water and it will die.