This is the 39th most frequent Macedonian word.
биле
"Биле" in Macedonian means "herbs" or "medicinal plants."
In this sentence, 'биле' is used as the past tense auxiliary verb indicating a past action (had been), referring to multiple subjects in the past tense.
Тие биле на викенд во планината.
They had been on a weekend trip in the mountains.
Here, 'биле' expresses a condition or occupation in the past, referring to multiple entities (parents) in plural past tense.
Мојите родители биле лекари.
My parents were doctors.
In this context, 'биле' is used to describe a reported or referenced past situation involving multiple subjects (the students).