Réponse:
Salut !
1. Jim probably felt sick and needed drugs / medecine.
2. I think Jim might have stolen Miss Watson's jewels.
3. I suppose Jim could have murdered the ...( je ne pense pas que ce mot existe. Peut être " the neighbour " )
4. In my opinion, Jim have disobeyed Miss Watson's orders
J'espère t'avoir aidé ! :)