Краткое пояснение: Заполняем предложения, используя правильную форму глагола в past continuous или past simple.
1. While I
was listening to music, my friends
arrived.
2. The bell
was ringing while we
were talking about our holiday.
3. I
wasn't looking at the exercise when the teacher
asked me a question.
4. Ricky
wasn't waiting for me when I
arrived at the café.
Ответ: смотри решение