1. They played football yesterday. 2. Did they play football yesterday? 3. They didn't play football yesterday.

Решение:

Это примеры предложений в Past Simple:

1. Утвердительное предложение: They played football yesterday.
2. Вопросительное предложение: Did they play football yesterday?
3. Отрицательное предложение: They didn't play football yesterday.

Ответ: Эти предложения являются примерами предложений в Past Simple.