Check the grammar explanation here.
Here you are links with exercises to practice the passive tense:
- ExamenglishÂ
- AgendawebÂ
- Esl-loungeÂ
- Oxford University PressÂ
- Englisch-hilfenÂ
- Speak speakÂ
- LearnenglishfeelgoodÂ
- English grammar (choose intermediate / advanced)
Exercises to practise the causative:
- Perfect English Grammar
- El aula de Isa (You’ve got the grammar explanation and the exercises at the bottom of the page)
- Oxford University PressÂ
- EUENGLISHÂ
- EnglishvocabularyexercisesÂ
- Ego4uÂ
- UsingenglishÂ