Not until the 1980s for the average person to own a computer. 1) it was possible
2) was it possible
3) was possible

3) was possible

Объяснение:

Только в 1980-х у среднего человека был компьютер. можно лучший ответ

1) was it possible

Not until 1980 was it possible for the average person to own a computer.