12. Он не смог (failed to do smth.)

12. Он не смог (failed to do smth.) извлечь урок из той торжественной ситуации, он не понимал, что он попал в неприятности.

Результаты (английский) 1:

12. he could not (failed to do smth.) take a lesson from the solemn situation, he didn't realize that he was in trouble.

Результаты (английский) 2:

12. He failed (failed to do smth.) Learn a lesson from that solemn situation, he did not realize that he was in trouble.

Результаты (английский) 3:

12. He was not able to (failed to do smth.) there is a lesson to be learned from the solemn situations, he did not understand that he is caught in trouble.