Bonjour,
Réponse :
a. When the firemen arrived in the wood, it was too late. The changeling had already changed life with Henry. (arrive - be - already + change)
b. Henry's mother explained she hadn't seen her son for more than 12 hours. (explain - not + see)
c. There were only crumbs in his pocket: Henry had eaten the biscuit! (be - eat)
d. Henry was surprised. He .had never seen a changeling before. (be - never + see )
e. She was so happy: her son had come back! (be - come)
Explications :
Prétérit pour les actions passées. Past perfect ( had + participe passé ) pour les actions antérieures aux actions passées. ( le past perfect : 'passé' dans le passé )