Chia động từ : People who do voluntary work in this city (give) out free food to the poor for a long time

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

13. How often _____________ you (practise) _____________ speaking English?

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

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

16. If I were you, I (not go) _____________ out alone.

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

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

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

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