4. Complete the gaps with the family vocabulary. 1. My sister's husband is my brother-in-law. 2. His parents are his children's 3. Your mother's sister is your 4. His sister's daughter is his 5. My uncle's daughter is my 6. His son and daughter are his sister's 7. His daughter is his mother's 8. Your mum's sister and her husband are your ,очень !!