1. Complete the sentences with a or an if necessary. a)

a) This is Dan and this is Nicola. They are - (zero article) teachers. And this is Bob. He is not a teacher. He is an architect. b) My father and mother are - (zero article) doctors and they work in a hospital. My father is a cardiologist and my mother is an anesthetists. I dont want to be a doctor, I want to be an actor. And my two sisters dont want to be - (zero article) doctors. They want to be - (zero article) artists.

A - перед вычисляемыми существительными в единственном числе, которые начинаются с согласной, an - с гласной. Ничего не ставится, когда существительное стоит во множественном числе.