There is something which is always coming but never arrives?

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

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

Which five letter word can be added at the end of below word to form a
valid word?

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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 ?

Two fathers and two sons went fishing one day. They were there the whole day and only caught 3 fish. One father said, that is enough for all of us, we will have one each. How can this be possible?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

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

What is it?

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

How can you leave a room with two legs and return with six legs?