Accusative.
In Latin, the "nominative" case refers to the subject.
genitive case
Gloria is the Latin word for glory. The word for death is mors in the nominative case and mortis in the genitive case.
sine (followed by the ablative case)
Sorry, I don't know.
'At' is denoted by the locative case.
in the feminine case: clara in the masculine case: clarus
It's called the same thing in Latin grammar; although it's referred to as the "nominative case" instead of the predicate nominative.
The Genitive Case shows possession or ownership!
Dative
Boys (accusative case).
Use the genitive case.