We've got a keyboard. WHOSE KEYBOARD IS IT?
It's our keyboard.
They've got a guitar. WHOSE GUITAR IS IT?
It's their guitar.
We've got a camera. WHOSE CAMERA IS IT?
It's our camera.
They've got a radio. WHOSE RADIO IS IT?
It's their radio.
We've got a phone. WHOSE PHONE IS IT?
It's our phone.
I've got glasses. WHOSE GLASSES ARE THEY?
They're my glasses.
I've got headphones. WHOSE HEADPHONES ARE THEY?
They're my headphones.
We've got a TV. WHOSE TV IS IT?
It's our TV.
I've got a watch. WHOSE WATCH IS IT?
It's my watch.
They've got a computer. WHOSE COMPUTER IS IT?
It's their computer.