Réponse :
There was a man outside the bank.
There were some beautiful trees in the street.
There were two girls with Jimmy.
There was a garage next to the theatre.
There was a big gymnasium in the school.
There were few women doctors in the 1940's.
Explications :
There was signifie il y avait,on l'utilise pour le singulier.
There were signifie également il y avait,mais on l'utilise pour le pluriel.