Еще темно, но детей уже разбудили,

Еще темно, но детей уже разбудили, потому что им надо быть в школе за полчаса до начала уроков.

Результаты (английский) 1:

It's still dark, but children have already awakened, because they should be in school for half an hour before the start of lessons.

Результаты (английский) 2:

Still dark, but the kids have woken up, because they need to be in school for half an hour before the start of lessons.

Результаты (английский) 3:

it"s still dark, but the children woke up, because they have to be in the school for half an hour before class.