Джон проверил сочинения своих учени

Джон проверил сочинения своих учеников и теперь читал книгу, которую он купил утром по дороге в школу.

Результаты (английский) 1:

John checked the writings of his students and now read the book, which he bought in the morning on the way to school.

Результаты (английский) 2:

John checked the works of his students now read the book, which he had bought in the morning on the way to school.

Результаты (английский) 3:

John has verified writings their pupils and now was reading a book, which he had bought this morning on the road to school.