Bonjour!
Réponse :
1. Did your alarm clock ring at 6 o'clock?
2. Was his cousin happy?
3. Did they watch television last night?
4. Were their parents British?
Explications :
Les questions sont construites ainsi:
auxiliaire + sujet + verbe
exemple: When was his birthday?
Quand il n'y a pas d'auxiliaire, on utilise "do" (ou "did" au prétérit)
exemple: Did you like it?
exemple: Do they know her?
En espérant t'avoir aidé :)