перевести на английский: к концу августа они заработали много денег; К окнцу года они разбили вражеский флот;

Выше — бездарный гуглоперевод.
Вот ручная работа:

They had earned a lot of money by the end of August.

They had smashed the enemy fleet by the end of the year.

By the end of August they made a lot of money.;By the end of the year they defeated the enemy fleet.

1. They had made a lot of money by august end. 2. They had defeated the enemy fleet by august end. 3. He reminded me concerning this event after John had left. 4. We had burnt dry leaves before the snow began. The rainbow appeared in the sky after the rain had stopped. She had cut the flowers before we came to the greenhouse. 7. Dodo, an extinct species of birds. They disappeared after the men had begun to hunt them. 8. The fire had destroyed the building before firefighters arrived. 9. Miss Marple had solved complex criminal problem, before it could do by police. 10. Robert had spoilt littlenew toy before his father explained to him how to play with it.
Это весь номер ;) И ЭТО НЕ ПЕРЕВОДЧИК! ТАМ НАПИСАНО ПРЕЗЕНТ ПЁРФИКТ ВОТ ТЕБЕ ОН!

a lot of money the end of August they made .the enemy fleet by the end of the year they defeated