Помогите пожалуйста!!! Первый ответ сделаю лучшим.
Укажите верный вариант ответа.

1 We knew that he is not able to made his work in time and decided to help him.
2 We knew that he was not able to make his work in time and decided to help him.
3 We know that he was not able to making his work in time and to decide help him.
4 We known that he was not able make his work in time and to deciding help him.

Правильный ответ №2Ошибки: №1 - не соблюдается правило согласования времен (ошибка - is) №3 - нужен инфинитив (ошибка - making) №4 - нет частицы to после able