Complete the sentences with who, who's or whose. 1. This is the girl ........brother lives in Dubai. 2. DO you know anybody ...........run a marathon? 3. She's an author ...........books are really popular in the USA. 4. Columbus is the explorer ..........discoverd America. 5. What's the name of the girl ........wearing goggles? 6. We can't understand people .........speak English really quickly. 7. The teatcher asked us ......... mobile phone was ringing. 8. He's the boy ......got short black hair.