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Fill in with been or gone:

Bob's not here. He's ________ to work.
The office is empty. Everybody has ________ home.
It's good to see you again. Where have you ________ ?
My brother's ________ to America four times.
Sorry, you can't speak to Anna. She's ________ to a party.
Mary's hair looks nice. She's just ________ to the hairdresser's.
Peter's ________ to Canada and he's staying there for three weeks.
I can't find my stapler. It's ___________.
‘Are you going to the bank?’ ‘No, I’ve already ___________ to the bank.’