Answer:
They are two brothers. However much they run, they do not reach each other.
What has two ends but no beginning?
They come out at night without being called, and are lost in the day without being stolen. What are they?
Mouth up it gets filled, mouth down it gets empty.
What fiveยญletter word, no matter how you pronounce it, is always pronounced wrong?
I am a room that has a roof but no walls. What am I?