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All are correct in most circumstances. The most commonly used is 'been to'. However, if you analyse 'been to' it makes no sense, because 'been' implies a steady state, and 'to' implies movement. English is a funny old language! Possibly the 'to' is the old Saxon 'zu', which means 'at'.
It depends on the situation you are talking about all can be correct. But they are not used in isolation, they are part of a complete sentence.
I have been to Korea.
I have been at university for 2 years.
The car has been in the garage all year.
What else can I help you with?
What important English right had been denied to the colonists?
The right to have a representative in Parliament.
Why has the right to education been important for Saudi Arabia?
it has been important because some people dont have the right to learn right away and they believe that learning is a privilege not a right
What were the laws of the indus valley?
the script had been written from right to left.
What do people who have been indicted by a grand jury have the right to?
The right to a speedy trial.
You had to go or you had been to go is right?
"You had to go"
What arm does Bethany wright with?
Her right hand, for she has been right-handed her whole life
Is it correct to say you have ever been to Spain?
no. the right way is, Have you ever been to Spain?
How long has has a lion been around?
since my friend right next to me has been born
Where has bigfoot been sighted?
he's right behind you...
What problems have there been with the hubble telescope?
the mirror was not right
Where is the hash key?
Right where it has always been. Just there #
Which famous star has Iyaz been out with?
Spell Right?
