58. If he had studied, he ___ the exam. a) would pass b) would have passed c) passed d) had passed

Перевод задания: Если бы он учился, он сдал бы экзамен.

Это условное предложение третьего типа: If + Past Perfect и would have + Participle II.

Ответ: b) would have passed — If he had studied, he would have passed the exam.