ponder [ˈpɒndəɼ] transitive verb Conjugación riflettere su ponder [ˈpɒndəɼ] intransitive verb Conjugación to ponder (on or over sthg) riflettere (su qc)
Complétez la séquence avec la proposition qui convient. This castle … built a long time ago. must must be must have been