Сделать из Active Voice в Passive Voice But we are sure that we will always remember their heroism

But we are sure that we will always remember their heroism. (active voice) - But we are sure that their heroism will always be remembered.(passive voice). В этом предложении при формировании пассивного залога дополнение heroism становится подлежащим (перевод: героизм будут помнить).