По 4 профессии на заканчивающиеся на : 1) -er 2)-or 3)-ist 4)-ian

1) a teacher, an engineer, a driver, a banker
2) an actor, a doctor, a moderator, a translator
3) an artist, a journalist, a chemist, a pianist, a scientist
4) a musician, a politician, a libraria, a veterinarian