1 She has been dreaming about a round-the-world sea voyage ... the time when she became interested in the tourism business.
2 He studied Japanese ... three years, but then, all of a sudden, he gave it up and got interested in Spanish.
3 Do you remember going on any trips with your classmates ... the academic year?
4 He hasn't flown ... that unlucky trip when all of his luggage was lost at the airport.
5 Because of my parents' jobs, I travelled a lot ... my childhood. It was very exciting for a kid.