Сейчас подчеркнем правильные слова в предложениях:
1. "Is this bicycle your/yours?" "Yes, it's mine/my."
2. "Who's he?" "He's Alex's and Rachel's/Alex and Rachel's cousin."
3. Who/Whose football is this?" "It's their/theirs."
4. "Are these Paul/Paul's?" "No, they're your/yours."
5. Who's/Whose is Jerry?" "He's my/mine friend."
6. "Are those computer games your/yours?" "Yes, they're our/ours."
7. Whose/Who guitar is this?" "It's their/theirs."
8. Who's/Whose she?" "She's Sally's/Sally sister."