Срочно!
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they came home after she cooked dinner
he was having a football training when he lost his wallet
how long you waited until i was arrived
yesterday at 6 am everybody was sleeping

Не совсем верно

Я думаю1) правильно2) He haved a football trainigs then he losted his wallet3) How long did you waited until i arrived4) Yesterday, at six am  everybody were sleeped Это прошедшее время, не надо употреблять Continious в данном времени!!!