Задание:Раскройте скобки, употребив глагол в правильной форме. That morning, I (decide)

Задание:
Раскройте скобки, употребив глагол в правильной форме.
That morning, I (decide) to walk to my office. When I (to play) in the yard, I suddenly (to see) my old friend
(Отметьте один правильный вариант ответа.)
Вариант 1 That morning, I decided to walk to my office. When I was playing in the yard, I suddenly was seeing my old friend
Вариант 2 That morning, I was deciding to walk to my office. When I was playing in the yard, I suddenly saw my old friend
Вариант 3 That morning, I decided to walk to my office. When I was playing in the yard, I suddenly saw my old friend
Вариант 4 That morning, I decided to walk to my office. When I played in the yard, I suddenly saw my old friend