Answer:
What word begins and ends with an E, but only has one letter?
I am a pretty one, fluttering in the pale blue sky. Delicate, fragile on the wing, indeed I am a pretty thing. What am I?
I can generate fear and some say I come out of your ears. I am as quiet as a mouse but not welcomed in the house. What am I?
I am the kind of fish that chases a mouse.
I go through a door but never go in, and never come out. What am I?
I am your mother's brother's only brother in law. Who am I?