слова в скобках надобно поставить в страдательный залог.The custom to hold

Слова в скобках надо поставить в страдательный залог.
The custom to hold a fight between a man and a bear (to know) in old Russa as "bear fun". Such funs (to paint) on frescos of the Kiev-Sophia Cathedral in 1037. Fights with other wild animals (to write) about in old manuscripts. Bear fights (to be) popular and (to become) a tradition. On national holidays fighte with bears (to hold) in villages, smal towns and big cities on market squares.