Exercise 4:
2. Diane is Theresa's and Frank's mother. She's their mother.
3. Liz is Bobby's and Alan's sister. She's their sister.
4. Frank is Katie's father. He's her father.
5. George and Theresa are Liz's, Alan's and Bobby's parents. They're their parents.
6. Katie is Frank's and Emma's daughter.
7. Theresa is Frank's wife. She is his wife.
8. Alan is Jake's and Diane's grandson. He is their grandson.
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