Whose phone is ringing?
It's her phone/Lisa's phone is the one ringing./ It´s hers
Whose jacket is hanging on the chair? (use I)
It´s mine/It's my jacket/That jacket belongs to me
Whose umbrella did you borrow?
t's his umbrella/It'´s his/John's umbrella is the one you borrowed
Whose pen is on the desk?
That's her pen/Emily's pen is on the desk./It´s hers
Whose backpack is in the hallway?
It's his backpack./Tom's backpack is in the hallway/It´s his
Whose dog is barking outside?
It's their dog/The Johnsons' dog is barking./It's theirs
Whose cat is sleeping on the sofa?
It's her cat/It's Mary's cat/It´s hers
Whose car is this?
It's his car / It's his/ It's Ben's car
Whose guitar is in the corner?
It´s hers/ It's her guitar/Julia's guitar is in the corner
Whose flowers are those?
These are her flowers./These are Anna's flowers./They are hers
Whose laptop is on the desk?
It's theirs./The Smith´s laptop is on the desk/ It´s their laptop on the desk