7) 2. Girls'
3. Ann's
4. boys'
5. Sue's
8) 2. Whose
3. Who's
4. Whose
5. Whose
6. Who's
6) 2. What do you do on Saturdays?
I do my homework.
3. What do you have for dinner on Sundays?
I have a bowl of muesli with milk.
4. How often do you see your friends?
I see them every day.