1. Когда я вернулась домой с работы, дети уже выучили уроки и смотрели какой-то фильм по телевизору. 2. Когда прозвенел звонок, Катя уже выполнила четыре задания и заканчивала пятое. 3. Когда мы вновь встретились, Ник уже окончил университет и работал в медицинском центре. 4. Когда я заехала за подругой, она уже собрала все вещи и ждала меня на улице. 5. Когда я приехала через неделю, они уже поменяли окна и красили стены.
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ответ:1. When I returned home from work, the children had already learned their homework and were watching a movie on TV. 2. When the bell rang, Katya had already completed four tasks and was finishing the fifth. 3. When we met again, Nick had already graduated from university and worked in a medical center. 4. When I called for a friend, she had already collected all her things and was waiting for me on the street. 5. When I arrived a week later, they had already changed the windows and painted the walls.

Объяснение:

1. When I returned home from work, the children had already learned their homework and were watching a movie on TV. 2. When the bell rang, Katya had already completed four tasks and was finishing the fifth. 3. When we met again, Nick had already graduated from university and worked in a medical center. 4. When I called for a friend, she had already collected all her things and was waiting for me on the street. 5. When I arrived a week later, they had already changed the windows and painted the walls.