Answer:
What begins with an E but only has one letter?
I go in hard, come out soft. Blow me hard and I'll make a pop. What am I?
I row quickly with four oars but never comes out from under my own roof.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.
I work when I play and play when I work. What am I?
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk