1. The girls were hungry and decided to have a meal (WHO)
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2. That boy's sister sits behind me at school (WHOSE)
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3. Did you borrow this book (THAT)
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1. The girls were hungry and decided to have a meal (WHO) - The girls who were hungry decided to have a meal 2. That boy's sister sits behind me at school (WHOSE) - That is the boy whose sister sits behind me at school 3. Did you borrow this book (THAT) is that the book you borrow?