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

Can you name some countries which do not have the alphabet 'A' in them?

What two things can you never eat for breakfast?

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?

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

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

What goes up but never comes down?

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

What can you catch but never throw?

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

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