This painting is believed _ painted by Leonardo Da Vinci
a) that it is
b) to be
c) being
d) to have been.

This painting is believed _ painted by Leonardo Da Vinci d) to have been.

Предложение:This painting is believed to have been painted by Leonardo Da Vinci.Перевод:Предполагается, что эта картина была написана Леонардо да Винчи. Ответ:d) to have beenУдачи в учёбе!