1.She worked for a man. The man used to be an athlete

→She worked for a man who that used to be an athlete

2.They called a lawyer. The lawyer lived nearby

→They called a lawyer who that lived nearby

3. I sent an email to my brother. My brother lives in Australia

→I sent an email to my brother who lives in Australia 

4. The customer liked the waitress. The waitress was very friendly

→The customer liked the waitress who was very friendly

5. We broke the computer. The computer belonged to my father

→We broke the computer that belonged to my father 

6. I dropped a glass. The glass was new

→I dropped a glass that was new 

7. She loves books. The books have happy endings

→She loves books that have happy endings 

8. They live in a city. The city is in the north of England

→They live in a city that is in the north of England

9. The man is in the garden. The man is wearing a blue jumper

→The man who is wearing a blue jumper is in the garden

10. The girl works in a bank. The girl is from India

→The girl who is from India works in a bank

11. My sister has three children. My sister lives in Australia

→My sister who lives in Australia has three children

12. The waiter was rude. The waiter was wearing a blue shir