Here are the answers for the Vocabulary Practice section:
1. Jane is Lucy’s younger **sister**.
2. Lucy hasn’t got any brothers.
3. Eric is Simon’s uncle.
4. David’s brother’s name is Tim and his grandmother’s name is Pam.
5. Jane is John’s **daughter**.
6. Tim is Judith’s **son**.
7. Pam is Tim’s **mother**.
8. Simon is Lucy’s **brother**.