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- Jane! Hello. Tell me, have you ever been to London?

- Hi, Pete. Yes I have. I have been to London recently.

- What have you seen there?

 - I have seen Big Ban and Westmister Abbey there. 

- Have you visited any interesting museums?

- Yes I have. I have visited  Madame Tussauds museum. And have you ever been to London. 

- Oh, no, Jane, I haven't been there yet.