1: were developped

2. were sold

3.wasn't allowed

4. were captured and burnt

5.were killed

6.was locked

7.was set on fire and thrown

8.be found

9. are made up

10. will be used

tien voila les verbes a la voix passives :

 Computers were developped in the 195os

 sold

allowed

 captured and burnt

 killed

locked

 set on fire and thrown

 found

  made up

 used