6. My friends (not to do) their homework at seven o'clock yesterday. They (to play) volley-ball.

Ответ (EN)

• 6. My friends were not doing their homework at seven o'clock yesterday. They were playing volley-ball. (Past Continuous используется для действий, происходивших в определенный момент в прошлом.)

Перевод (RU)

• 6. Мои друзья не делали домашнее задание вчера в семь часов. Они играли в волейбол.