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

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

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

What has 88 keys?

There is something which is always coming but never arrives?

What will you call your mother's brother's brother-in-law?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

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

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

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