Answer:
With three leaves, I am just a plant. Add another leaf and everyone will want me for good luck. What am I?
What is harder to catch the faster you run?
I hold two people together but touch only one. What am I?
Pronounced as one letter but written with three always in evil never in good and always in zebra never in animal. What is it?
I have hands but cannot clap
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.