Привет! Помогите заполнить for, since, or during. Unit 2. Section 1. № 6. ГДЗ Английский язык Enjoy English 9 класс Биболетова.

Вставьте for, sinse или during.
1)     She has been dreaming about a round-the- world sea voyage since the time when she became interested in the tourism business.
2) He studied Japanese for 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 during the academic year?
4)   He hasn’t flown since that unlucky tripwhen all of his luggage was lost at the airport.
5)   Because of my parents’ jobs, I travelled a lot during my childhood. It was very exciting for a kid.