Whose is this teddy bear?
It's Stella's.
Whose are these teddy bear?
They're Stella's.
Whose is this kite?
It's Sue's.
Whose are these kites?
They're Sue's.
Whose are these scooters?
They're Mera's.
Whose is this car?
It's Simon's.
Whose are these cars?
They're Simon's.
Whose is this drum?
It's Lenny's.
Whose is this scooter?
It's Mera's.
Whose are these drums?
They're Lenny's.