to meet with, see, meet again or for the first time / to come across, meet by accident, bump into / to gather, to come together / to receive guests etc.

middle school (7th through 9th years overall)

a classmate (student of the same class) / a schoolmate who attends school in the same year

the latest; the most recent

nowadays / recently

an electric multiple unit train

(chiefly women's speech) first person singular pronoun: I, me

(polite) first-person singular pronoun: I, me

a personal or private matter / (by extension) selfishness

(formal) first-person singular pronoun: I, me