Bonjour,
Réponse :
a-I made my bed this morning
→ I didn't make my bed this morning.
b-They began their career in 2022
→ They didn't begin their career in 2022.
c-She lived in Paris.
→ She didn't live in Paris.
d-He was born in Nîmes.
→ He wasn't born in Nîmes.
We studied in high school.
→ We didn't study in hight school
Explications :
Prétérit forme négative, c'est facile !
→ Pour tous les verbes ( sauf BE ) , à toutes les personnes : didn't + BV
( didn't = did not )
→ Be : wasn't( = was not ) / weren't (=were not )