Chia dạng đúng của động từ trong ngoặc

21. Debris (scatter)___________ across the countryside by the strong winds last night.

22. He wouldn’t be ill if he (smoke) __________ a lot.

23. By the time the police (come)___________________, the thief (leave)______________________

24. After I (finish)_______________ the lesson, Lan went out.

25. This house (build)_____________in 2015.

26. Did you enjoy (watch)_______________ the film?

27. He has decided (go)______________ to work in a school in a quite remote area.

28. We plan (have)____________ a picnic this Sunday. Would you like to join us?

29. He intends (stay)_____________ there for at least three years.

30. I try (do) ________my homework every day so that I can always (get)________ good marks.