What goes up but never comes down?

What English word has three consecutive double letters?

A bus driver was heading down a street in Mexico. He went right past a stop sign without stopping, he turned left where there was a "no left turn" sign, and he went the wrong way on a one-way street. Then he went on the left side of the road past a cop car. Still - he didn't break any traffic laws. Why not?

People put me on the table and cut me but do not eat me. What am I?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

What do you answer even though it never asks you questions?

What word is pronounced the same if you take away four of its five letters?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?