Bonnjour,
Réponse :
a. The giant was having dinner in the forest, when he saw a strange creature.
b. While Conor was reading a book in his bedroom, he realised that he had
not done his homework yet.
Explications :
Prétérit Be + V-ing: pour décrire les actions qui étaient en cours
( was / were + V-ing )
Prétérit simple: pour les actions qui viennent interrompre les actions en cours
