It’s been ages
Meaning: someone haven’t seen someone for a very long time or long time has passed sinse some occasion
Example: It's been ages since I've studied Spanish
Выучи грамотный разговорный английский до уверенного владения всего за 9 месяцев по системе естественного усвоения иностранных языков. Жми!
Example: It's been ages since I've studied Spanish