What is always in front of you but can’t be seen?

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

Which of the following words don't belong in the group and why?
CORSET, COSTER, SECTOR, ESCORT, COURTS

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

You can see it everyday, But cannot touch it at will. What is it?

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

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?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

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

There are 2 cops parked along a one-way street looking for traffic violations. They spot a taxi driver going in the wrong direction, yet they do nothing.

Why?