Question

Her relatives were in natal on their last vacation.

pra coloca em negativa e interrogativa.

Answer 1

Interrogativa Were your relatives at Christmas on their last vacation?                  Negativa Were not your relatives at Christmas on your last vacation?                Espero que tenho ajudado se não ajudei desculpa      

Answer 2

Negativa
Her relatives were not in natal on their last vacation ou na forma contraida: Her relatives weren't in natal on their last vacation

Interrogativa
Were her relatives in natal on their last vacation?