изучив вопрос детально, он смог отв

изучив вопрос детально, он смог ответить на все вопросы, заданные ему профессором

Результаты (английский) 1:

Having examined the issue in detail, he was able to answer all questions put to him by Professor

Результаты (английский) 2:

examining the issue in detail, he was able to answer all questions put to him by Professor

Результаты (английский) 3:

Having examined the issue in detail, he was able to answer all the questions posed to him by professor