4. Choose the correct variant: The students had / were having their Science lesson at 1:30 p.m. yesterday. They studied / were studying the first law of Newton when somebody’s phone rang / was ringing.

Перевод задания: Выберите правильный вариант.

The students were having their Science lesson at 1:30 p.m. yesterday. They were studying the first law of Newton when somebody’s phone rang.

Занятие и изучение закона продолжались в указанный момент; звонок телефона — короткое событие, которое произошло во время урока.

Вчера в половине второго у учеников шёл урок естествознания. Они изучали первый закон Ньютона, когда у кого-то зазвонил телефон.