The singular possessive is author's. The plural possessive is authors'.
The possessive form for the noun opera is opera's.Example: The opera's reiviews were all raves.
The possessive form is Ron's dance.
The possessive form of "the best performance by Sting" is "Sting's best performance".
A poem in the form of a letter.
The singular possessive form is week's.
The singular possessive form of "classmate" is "classmate's."
The possessive form is Amos's.
The singular possessive form of "gypsy" is "gypsy's."
The singular possessive form of "countries" is "country's".
The singular possessive form of county is county'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.
singular possessive: boy'splural possessive: boys'
The singular possessive form is aircraft's.
The singular possessive form is speculum's.
The singular possessive form is contralto's.
The singular possessive form is frontiersman's.