City IS the singular form. Cities is the plural.
The singular form of the word flagella is flagellum.
Criterion is the singular form of criteria.
The singular possessive form of city is city's
The word "citys" is an incorrect spelling for the plural noun city. To show possession, an apostrophe is used. The correct forms are: Singular: city Singular possessive: city's Plural: cities Plural possessive: cities'
The word 'duo' is the singular form; the plural form is duos.
The singular form of the word "señores" is "señor."
That is the singular form; the plural form is those.
'Jackhammer' is the singular form.
The singular form is commando.
The word dog is the singular form.
The singular possessive form of jury is jury's
The word "biopsies" is the plural form of the word. The singular form is "biopsy."