мы знаем две причины этого заболева

мы знаем две причины этого заболевания. Мы не знаем причины его болезни. Каковы причины его болезни?

Результаты (английский) 1:

We know two reasons of this disease. We do not know the reasons for his illness. What are the causes of his illness?

Результаты (английский) 2:

we know for two reasons for this disease. We do not know the reasons for his illness. What are the causes of his illness?

Результаты (английский) 3:

we know the two causes of the disease. we don"t know the cause of his illness. what are the causes of the disease.