'key's" As in, "The key's metal surface was beginning to corrode".
The singular possessive form of criterion is criterion's
The singular possessive form is scissors'.
The possessive form for the singular noun division is division's.Example: Our division's sales exceeded quota this quarter.
Dime's is the singular possessive of dime.
The singular possessive form for knife is knife's.The plural possessive form for knife is knives'.The knives' edges were dull from cutting rope.
The possessive form of the singular noun key is key's.Example: The key's rust made it difficult to open the lock.
The possessive form of the singular noun key is key's.The plural form of the noun key is keys.The plural possessive form is keys'.Examples:This key's tag says, "storage locker".I finally found the ring of keys' owner.
The singular possessive form is week's.
The singular possessive form is classmate's.
The possessive form is Amos's.
The singular possessive form for country is county's.
The singular possessive form for the noun gypsy is gypsy's.
The singular form for the plural noun countries is country; the singular possessive form is country's.
singular possessive: boy'splural possessive: boys'
The singular possessive form is speculum's.
The singular possessive form is aircraft's.
The singular possessive form is frontiersman's.