Answer:
Digital white-out.
With three leaves, I am just a plant. Add another leaf and everyone will want me for good luck. What am I?
I have keys but no locks. I have space but no room. You can enter but canβt go outside. What am I?
I run around the streets all day. Under the bed or by the door I sit at night, never alone. My tongue hangs out, waiting to be fed during the day. What am I?
I am always in front of you, but you will never see me. What am I?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.