поставьте апостроф:"s там где это нужно
1) Which pop stars do you like?
2) My father owns a clothes factory/
3)Whose tickets have you got?
4) Are these your sister Harry Potter book&
5) Look at thise peoples clothes.
6)My grandmother dogs name is Misty/
7)Do you go walking with your frends at weekends &
8)Don"t take the childrens sweets/