Раскрыть скобки, поставив глаголы в Past simple или Past Perfect: 1. Tom (to return) from the cinema at 5 o’clock. Tom (to return) from the cinema by 5 o’clock.2. He (to think) that he (to lose) the money.3. Ann (to tell) me that she (to see) the film.4. When I (to come) home, mother (to cook) dinner.5. When father (to return) from work, we already (to do) our homework.6.The teacher (to understand) that Lena (not to do) her homework.7. When we (to come) to the station? The train already (to leave).8. Nick (to show) the teacher the picture which he (to draw).

Вот подробный разбор с раскрытыми скобками и объяснением выбора времени (Past Simple или Past Perfect) для каждого предложения:

1. Tom returned from the cinema at 5 o’clock.
   Здесь используется Past Simple, так как указан конкретный момент в прошлом — "at 5 o’clock".

   Tom had returned from the cinema by 5 o’clock.
   Здесь используется Past Perfect, потому что "by 5 o’clock" указывает на завершённость действия к определённому моменту в прошлом.

2. He thought that he had lost the money.
   Главное предложение — "He thought" — в Past Simple, а "he had lost the money" — в Past Perfect, так как потеря денег произошла до того, как он об этом подумал.

3. Ann told me that she had seen the film.
   Рассказ о событии, которое произошло до момента рассказа, требует Past Perfect в придаточной части: "she had seen the film".

4. When I came home, mother was cooking dinner. (или: mother had cooked dinner — в зависимости от смысла)
   Здесь возможны два варианта:

   • Mother was cooking dinner, если действие происходило в тот момент, когда рассказчик пришёл.

   • Mother had cooked dinner, если ужин был готов к моменту прихода.

   Так как в предложении нет уточнения, предположим, что речь идёт о процессе. Тогда: When I came home, mother was cooking dinner.

5. When father returned from work, we had already done our homework.
   Домашняя работа была выполнена до возвращения отца, поэтому "had already done" — Past Perfect. Возвращение — событие в прошлом — Past Simple.

6. The teacher understood that Lena had not done her homework.
   Понимание произошло после того, как Лена не сделала задание, поэтому "had not done" — Past Perfect, а "understood" — Past Simple.

7. When did we come to the station? The train had already left.
   Вопрос стоит в Past Simple — "did we come". Уход поезда произошёл до прихода, поэтому — "had already left" (Past Perfect).

8. Nick showed the teacher the picture which he had drawn.
   Рисунок был нарисован до того, как Ник его показал. Поэтому "had drawn" — Past Perfect, а "showed" — Past Simple.

Полный ответ с раскрытыми скобками:

1. Tom returned from the cinema at 5 o’clock.
   Tom had returned from the cinema by 5 o’clock.

2. He thought that he had lost the money.

3. Ann told me that she had seen the film.

4. When I came home, mother was cooking dinner.

5. When father returned from work, we had already done our homework.

6. The teacher understood that Lena had not done her homework.

7. When did we come to the station? The train had already left.

8. Nick showed the teacher the picture which he had drawn.