Réponse:
Bonjour,
j'espère que ceci pourra vous aider.
1 [...] were smoking [...] came in
2 [...] saw [...]was telephoning
3 were you doing
4 [...] was eating with my grandma [...] collapsed
Explications:
Le past continuous exprime des actions d'arrière-plan et/ou non bornées tandis que le past simple est associé à des actions brèves/ de premier plan.