Контрольные задания

Вопрос:

Фото задания: Упражнения - 4. 3. The old man (to think) about his plan when he (to fall) asleep.

Фото задания

Упражнения - 4. 3. The old man (to think) about his plan when he (to fall) asleep.

The old man was thinking about his plan when he fell asleep.