Whose cell phone is this? (she)
It's hers.
Whose cap is this? (I)
It's mine.
Whose guide book is this? (they)
It's theirs.
Whose magnifying glass is this?(I)
It's mine.
Whose sunscreen is this? (you)
It's yours.
Whose notebook is this? (she)
It's hers.
Whose sunscreen is this? (they)
It's theirs.
Whose backpack is this?(you)
It's yours.
Whose magnifying glass is this? (we)
It's ours.
Whose water bottle is this? (he)
It's his.
Whose map is this?(he)
It's his.
Whose coat is this? (we)
It's ours.