12. People who do voluntary work in this city (give) ______has gived_______ out free food to the poor for a long time.

13. How often _______do______ you (practise) _________practise____ speaking English?

14. I (get) ______got_______ good marks after my examination finished at school.

15. _______Did______ they (leave) ____leave_________ their house when their parents visited them?

16. If I were you, I (not go) _____wouldn't go________ out alone.

17. Jenny usually (attend) ____attends_________ her teachers' lectures on time.

18. In my house, pigs are often (feed) _____feeds________by my mother.

19. How about (travel) ____travel_________ to Nha Trang beach this weekend?

20. Anna (not manage) ____didn't manage_________ to prevent her cats from fighting with each other since the first time.