Избрать верный ответ1)I am writing in connection with the advertisement which

Выбрать правильный ответ
1)I am writing in connection with the advertisement which appeared/has appeared on 3 December.
2)I originally studied/have studied mechanical engineering at university and I graduated/have been graduating with a first-class degree.
3)I now completed/have now completed a postgraduate degree in business and administration.