Question

Определить время и раскрыть скобки When Mary (to come) home a day ago, her brothers (to run) and (to sing) happily. "We (to learn) a new poem!" they laughed.

Answer 1

Came-past simple

Were running and singing-past Continuous

Have learnt-present Perfect

Answer 2

Давайте определим время и раскроем скобки в данном предложении:

"When Mary (to come) home a day ago, her brothers (to run) and (to sing) happily. 'We (to learn) a new poem!' they laughed."

1. "When Mary (to come) home a day ago": Время - Past Simple. Поскольку указано "a day ago" (день назад), время действия уже прошедшее, поэтому правильное будет: "When Mary came home a day ago".

2. "her brothers (to run) and (to sing) happily": Также Past Simple. Правильное будет: "her brothers ran and sang happily".

3. "'We (to learn) a new poem!' they laughed": Здесь также Past Simple. Правильное будет: "'We learned a new poem!' they laughed."

Полное предложение с учетом исправлений: "When Mary came home a day ago, her brothers ran and sang happily. 'We learned a new poem!' they laughed."