Вставь since, During, for 1.He made great progress in learning foreign languages …… his school years
2. I'll be here….. two hours
3. My brother has seriously gone in for sport ….. his childhood
4. He hasn’t heard from his son … June.
5. We will stay in a hotel … two weeks.
6. … the war he was a pilot.
7. Our friends took a lot of pictures … their travelling
8. I have been sick …. Thursday
9. I visited many museums ….. my stay in London
10. He worked at the factory …. three years