Answer:
What has one eye but cannot see?
I have one, you have one. If you remove the first letter, a bit remains. If you remove the second, bit still remains. If you remove the third, it still remains.
I run around the city, but I never move.
In the night a mountain, in the morning a meadow.
who do you think you know but sometimes you don't
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?