Bonjour auriez-vous la gentillesse de m'aider à cet exercice d'anglais que je n'ai absolument pas compris . Merci par avance.

what were you doing ...
were your morther cooking...
were you sleeping...
what was Mr Mills doing when...
was he sitting or standing.

1- what were you doing yesterday at 6pm ?
2-was your mother cooking at 11am ?
3-were you sleeping at 6am ?
4-what was Mr Mills doing when he was killed ?
5-was he sitting or standing ?