Complete the sentences with a or an if necessary. a)this is dan and this is nicola. they are teachers. and this is bob. he is teacher. he is architect. b)my father and mother are doctors and they work in .. hospital. my father is cardiologist and my mother is anesthetists. i don't want to be doctor, i want to be actor. and my two sisters don't want to be doctors. they want to be artists.
