В то время появились компьютеры в ш

В то время появились компьютеры в школе и уроки были непонятны.

Результаты (английский) 1:

At the time there were computers in school and lessons were unclear.

Результаты (английский) 2:

At that time there were computers in the school and the lessons were clear.

Результаты (английский) 3:

at that time, computers in the school, and the lessons were unclear.