1. вместо while - when
2. вместо when - while
3. вместо was opening - opened
4. вместо were having - had
5. вместо drank - was drinking
6. вместо cooked - was cooking
7. вместо was going - went
8. вместо was buying - bought
9. вместо built - was building
10. вместо were speaking - was speaking
Объяснение: