I have a book (It is my book) - My /maɪ/
You have a book (It is your book) - Your /yʊər/
He has a book (It is his book) - His /hɪz/
She has a book (It is her book) - Her /hɜr/
We have a book (It is our book) - Our /aʊər/
They have a book (It is their book) - Their /ðɛər/
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