Réponse:
when the zookeeper arrived, the yellow monkey was drinking.
when the zookeeper arrived, a monkey was slepping.
" ", monkeys were talking.
" ", a monkey was jumping between the trees.
Explications:
pour dire ce que des personnes sont en train de faire en anglais il faut dire : be+verbe qui finit en -ing ( he is eating ) donc pour le passé tu mets juste " be " au passé ( he was eating when...)
