4. 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 правильные формы глаголов.

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.

Пояснение: действия, происходившие в определённый момент и в тот момент, когда произошло другое событие, употребляются в Past Continuous; внезапное событие — в Past Simple.

Вчера в 1:30 дня у учеников шёл урок естествознания. Они изучали первый закон Ньютона, когда у кого-то зазвонил телефон.