Use the Past Simple Tense instead of the infinitives in brackets:
When I (to arrive) at the station, I (to go) to the booking-office and (to buy) a ticket.

К сожалению, у нас пока нет статистики ответов на данный вопрос, но мы работаем над этим.

Use the Past Simple Tense instead of the infinitives in brackets:When I (to arrive) at the station, I (to go) to the booking-office and (to buy) a ticket.