Chuyển sang bị động: We clean our rooms; We should wear warm clothes before going outside; He gave her a watch on her birthday

Chuyển sang bi động
28. We clean our rooms.
> Our rooms…………………………………………………………………
29. We should wear warm clothes before going outside
> Warm clothes………………………………………………………………
30. He gave her a watch on her birthday.
> She………………………………………………………………………….