Answer:
I am useless when together but useful when I am broken apart. What am I?
You use a knife to slice my head but you weep beside me when I am dead
My second is performed by my first. A thief by the marks of my whole might be caught. What am I?
What is an astronautโs favorite key on a keyboard?
I am the best thing that can happen after a stick hits a ball.
If itโs information you seek, come and see me. If itโs pairs of letters you need, I have consecutively three. What am I?