Прошу помогите пожалуйста! Раскройте скобки либо в обычном прошедшем либо в прошедшем результат (Past Simple, Past Perfect) даю 16 баллов+отмечу как лучшее
…animals had gone extinct by … humans appeared. They became ………..which had been drawn …. scientists discovered
Animals had gone extinct by humans appeared. They became which had been drawn scientists discovered