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QUICK ANSWER
"It's" is a form of "it's", a contraction which is often translated as "es". "It has been" is a form of "it has been", a phrase which is often translated as "ha sido". Learn more about the difference between "it's" and "it has been" below.
it's()
A contraction is a shortened form of a word or group of words made by omitting a sound or letter (e.g., don't).
it has been()
A phrase is a group of words commonly used together (e.g., once upon a time).
