Work and study vocabulary, every case and article type.
Type the missing adjective ending. The noun's gender is shown on each line, so you can concentrate on the pattern.
Wer oder was? The subject — and after sein, werden, bleiben.
Wen oder was? The direct object — and after für, ohne, durch, gegen, um.
Wem? After mit, bei, nach, von, zu, aus, seit — and verbs like helfen, danken, gehören. Plural nouns add -n.
Wessen? Possession, and after wegen, trotz, während. Masculine and neuter nouns add -s or -es.
No case given here. Work out from the sentence which case each noun is in — the verb, the preposition, wo? or wohin? — then the ending.