Turn from active into passive 1.they sell apples by the kilo 2.they keep milk in the fridge 3.her father gave her a watch for her birthday 4.they are still writing letters 5.they will bring the parcel to the office 6.he has made mistakes in the test 7.somebody has left the window open 8.she painted that picture ten years ago 9.they will prepare all the papers for you 10. she has made a nice dress herself 11.they will discuss these problems at the meeting 12.many people are watching the final match now 13.they understood his words correctly

1. Apples by the kilo are sold (by them)
2. Milk in the fridge is kept (by them)
3. A watch was given to her for her birthday by her father
4. Letters are still being written (by them)
5. The parcel will be brought to the office (by them)
6. Mistakes have been made in test by him
7. The window has been left opened by someone
8. That picture was painted by her ten years ago
9. All the papers will be prepared for you (by them)
10. A nice dress has been made by her
11. These problems will be discussed at the meeting (by them)
12. The final match is being watched by many people now
13. His words were understood correctly (by them)