11. _____________ you (take) _____________ part in this game if you have free 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.