Лекција 5 - Forms of 'whose'

Whose is this apartment?
Whose is this cheese?
Whose is this water?
Whose are these children?
Whose is this tea?
Whose is this milk?
Whose is this room?
Whose are these eggs?
Whose is this textbook?
Whose is this beer?
Whose is this house?
Whose is this money?