The singular noun is donkey.
The plural noun is donkeys.
Examples:
My grandfather has a donkey at his farm. (singular)
The cart was pulled by two donkeys. (plural)
The singular possessive of donkey is donkey's
The possessive form for the singular noun donkey is donkey's.
Example: The donkey's rider wore a hat with a large black feather.
The possessive form of the singular noun donkey is donkey's.
example: The donkey's friend is Winnie the pooh.
The plural form of the noun donkey is donkeys.
The plural possessive form is donkeys'.
The possessive is donkey's (The donkey's health is very good).
Donkey is singular. Plural is donkeys.
donkey's
donkey 's
donkey's
The possessive plural of donkey is donkeys' whilst the singular possessive is donkey's.
donkey's
The possessive form is Amos's.
The singular form is goose; the singular possessive form is goose's.The plural form is geese; the plural possessive form is geese's.
The singular possessive form of county is county's.
Quantum is singular, not singular possessive. The singular possessive form is quantum's.
The singular possessive form is week's.
The singular possessive form is contralto's.
The singular possessive form is aircraft's.
The singular possessive form is frontiersman's.
The singular possessive form is speculum's.