Questions & Answers about Ключі лежать у шухляді столу.
Ключі is the nominative plural form of ключ (key).
In this sentence, ключі is the subject, so it appears in the nominative case.
Singular: ключ
Plural: ключі
The verb is also plural to match it: ключі лежать = the keys are lying / the keys are in...
Because лежать is the main verb here. It means lie or be lying.
Ukrainian often uses specific position/location verbs where English might just use is/are:
- лежати = to lie
- стояти = to stand
- висіти = to hang
So Ключі лежать... literally means The keys are lying..., not just The keys are...
Also, present-tense є is often omitted in Ukrainian when it would simply mean is/are, but here it would not be needed anyway because лежать already does the job.