Whose cell phone is this? (they)
It's their cell phone. = It's theirs.
Whose coat is this? (Yonna)
It's Yonna's coat. = It's her coat. = It's hers.
Whose map is this? (Benny)
It's Benny's map. = It's his map. = It's his.
Whose cap is this? (you)
It's your cap. = It's yours.
Whose cell phone is this? (Eli)
It's Eli's cell phone. = It's his cell phone. = It's his.
Whose magnifying glass it this? (Ryan)
It's Ryan's magnifying glass. = It's his magnifying glass. = It's his.
Whose coat is this? (Enrique)
It's Enrique's coat. = It's his coat. = It's his.
Whose cake is this? (Mina)
It's Mina's cake. = it's her cake. = It's hers.
Whose water bottle is this? (he)
It's his water bottle. = It's his.
Whose notebook is this? (she)
It's her notebook. = It's hers.
Whose camera is this? (she)
It's her camera. = It's hers.
Whose sunscreen is this? (I)
It's my sunscreen. = It's mine.
Whose magnifying glass it this? (it)
It's Pikachu's magnifying glass. = It's its.
Whose guidebook is this? (Barry)
It's Barry's guidebook. = It's his guidebook. = It's his.
Whose sunscreen is this? (Ellie)
It's Ellie's sunscreen. = It's hers.
Whose notebook is this? (I)
It's my notebook. = It's mine.
Whose cap is this? (she)
It's her cap. = It's hers.
Whose backpack is this? (he)
It's his backpack. = It's his.
Whose map is this? (Ian)
It's Ian's map. = It's his map. = It's his.
Whose water bottle is this? (she)
It's her water bottle. = It's hers.