I have teeth but i don't bite. Who Am I ?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

There is something which is always coming but never arrives?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

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?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

I taste better than I can smell. Who am I?

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?

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?

What goes up but never comes down?