Поставьте 's или 'es там где это нужно his family/surname/nikolayev his dad/name/vladimir his mum/favourite pop stars/ the bee gees his brother/name/voctor oleg/favouritw pop gtoup/franz ferdinand

1) His families surname Nikolayev
2) His dad`s name Vladimir
3) His mum`s favourite pop stars The Bee Gees
4) His brother`s name Victor
5) Oleg`s favuorite pop gtouo Franz Ferdinand