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

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

What has 88 keys?

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 ?

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?

It is always ahead of me yet I can never see it. What is it?

It belongs to you, but other people use it more than you do. 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 shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

Name the three-letter word that can complete the below words?

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E