Ответ:

Перевод задания: Выберите правильное относительное местоимение (a, b или c).

  1. We like the festival which celebrates a cultural tradition.
  2. Leo, who lives in the cottage by the river, is a wildlife photographer.
  3. St Petersburg — where the White Nights Festival takes place every summer — is a stunning city.
  4. Maria, whose favourite food is pizza, really likes birthday parties.
  5. October 5th — when the festival is celebrated — is my favourite day of the year.
  6. The museum, which has the ancient Egyptian collection, opens at 10 a.m. every day.

Правило: who употребляется для людей, which — для предметов и животных, where — для мест, when — для времени, whose — для обозначения принадлежности.

Перевод ответа: 1) который; 2) который; 3) где; 4) чей; 5) когда; 6) который.