Réponse:

Bonjour,

1. Jenny didn't help her mom this morning/Did Jenny help he mother this morning?
2. Helen didn't write a letter to her best friend yesterday /Did Helen write a letter to her best friend yesterday?
3. mom didn't hear a strange noise last night /Did mom hear a strange noise last night?
4. my brother didn't read an interesting book last week /Did my brother read an interesting book last week?
5. I didn't bake a delicious cake two days ago /did I bake a delicious cake two days ago?
6. my grandparents were not at home on Sunday/ Were my grandparents at home on Sunday?
7. she didn't play tennis three weeks ago/ Did she play tennis three weeks ago?

J'espère t'avoir aidé, bonne fin de journée :)