Answer:
I am a certain five-letter word and become shorter when you add two letters to me. What am I?
I am the only word that looks the same when spelled upside down.
Only one color, but not one size, stuck at the bottom, yet easily flies. Present in sun, but not in rain, doing no harm, and feeling no pain. What am I?
I can be written, I can be spoken, I can be exposed, I can be broken. What am I?
I am the book one can never finish reading
I have feet on my head