Possessive nouns

Which one is correct:

My __________________ car

• dads'

• dad's

The ________________ mane

• lion's

• lions

The __________________

• children's candies

• the childrens's

__________ houses

• dogs'

• dogs's

My ________________ piggy banks

• sisters's

• sisters'

My ________________ house

• parents'

• parents's

My ___________ evidence.

• class's

• class'

Plural of CALF

• calfes

• calves

Plural of HIVE

• hives

• hifes

Plural of KNIFE

• knifes

• knives