Answer:
What two keys cannot open any door?
I begin and have no end. Eventually, I will be the ending of all that has begun. What am I?
I am used to bat with, yet I never get a hit. I am near a ball, yet never thrown. What am I?
I come with a train and go with a train and the train doesn't need me but can't go without me.
Dead on the field lie ten soldiers in white killed by one blade yet there was no fight. What are they?
The answer I give is yes, but what I mean is no. What was the question?