Resposta :
a)There is an excellent doctor in the hospital.
b)He is an university student. c) He is a good father.
d)She is a great friend.
Espero ter ajudado;
Resposta:
a)There is AN excellent doctor in the hospital.
b)He is AN university student.
c) He is A good father.
d)She is A great friend.
Explicação:
"Antes de consoante use A"
"Antes de vogal use AN"