20. When it ___________ politics I know nothing.

19. _________ every family had a house with a beautiful garden.

18. I'm sorry, I didn't do it __________.

17. So disappointed, Scott and his companions __________ on the return journey.

16. The photographs made me__________ my schooldays.

15. I' d like to _________ two tickets for the concert.

14. He traveled__________, and returned home only yesterday.

13. In big cities during cold winter months, many old people _________ the polluted air.

12. After the failure of the electricity supplies the city was __________.

11. Anyone will help you when you _________ difficulties.