Даже если бы ты предупредил их зара

Даже если бы ты предупредил их заранее, они все равно не успели бы подготовить документы к твоему приезду.

Результаты (английский) 1:

Even if you had warned them in advance, they still did not have time to prepare documents for your arrival.

Результаты (английский) 2:

Even if you had warned them in advance, they would not have time to prepare the documents to your arrival.

Результаты (английский) 3:

Even if you're warned them in advance, they are all equal to not wait too long to prepare documents to thy arrival.