Hi, Guys!,
If you need to practise more, you can click on the following links, download all worksheets easily. I hope these exercises help you improve!!! Sure!!! ;)
1. 100 sentences to transform into Passive
2. All Types of Passive for Upper-Secondary
3. Self-Study PASSIVE (Bachillerato 1)
4. inglesloscerros.wikispaces.com/file/view/Passive
5. inglesloscerros.wikispaces.com/file/view/Passive 2
6. http://www.diegodesiloe.com.IMPERSONAL PASSIVE