unnoticed [ˌʌnˈnəʊtɪst] adjective inadvertido ( f inadvertida), desapercibido ( f desapercibida) to go unnoticed pasar desapercibido ( f desapercibida)
Complétez la séquence avec la proposition qui convient. We … take the car, we can walk. have to mustn't don't have to