Questions & Answers about Milja je duga.
Because milja is a feminine noun in Croatian. Adjectives must agree with the noun they describe in gender, number, and case.
So:
- dug = masculine
- duga = feminine
- dugo = neuter
Since the subject is milja, the adjective has to be duga.
Je is the 3rd person singular present tense of the verb biti (to be).
So it corresponds to is in English.
A few forms of biti in the present tense are:
- ja sam = I am
- ti si = you are
- on / ona / ono je = he / she / it is
In this sentence, je links the subject milja with the adjective duga.