Questions & Answers about Dzieło jest gotowe.
- dzieło = work, piece of work, work of art, creation
- jest = is
- gotowe = ready
So the sentence literally means The work is ready or The piece is ready.
Because dzieło is a neuter noun in Polish.
Polish adjectives must agree with the noun in gender, number, and case:
Since dzieło is neuter, the adjective must also be neuter: gotowe.