This is the 1086th most frequent Russian word.
пройдут
"Пройдут" means "they will pass" or "will go through."
In this sentence, 'пройдут' is used in the sense of 'will pass' to show the temporal transition of an event (rain).
Дожди скоро пройдут, и погода станет солнечной.
The rains will pass soon, and the weather will become sunny.
Here, 'пройдут' refers to 'will pass', indicating the successful completion of exams and figuratively moving forward in academic achievements.
Ученики успешно пройдут экзамены и поступят в университет.
The students will successfully pass the exams and enroll in the university.
In this example, 'пройдем' (first person plural future tense of 'пройдут') indicates physical movement or traversal.