4 A:...... (the children/see) their father yesterday? B: No. By the time he ..... (drive) back from the city, they ..... (already/fall) asleep.
A: Did (the children/see) their father yesterday? B: No. By the time he had driven (drive) back from the city, they had already fallen (already/fall) asleep.
Ответ: A: Did (the children/see) their father yesterday? B: No. By the time he had driven (drive) back from the city, they had already fallen (already/fall) asleep.