6º: Unit 9: Defining and non-defining relative clauses

 You can use these links to practice the defining and non-defining relative clauses:

https://learnenglish.britishcouncil.org/grammar/intermediate-to-upper-intermediate/relative-clauses-non-defining-relative-clauses (You have theory to revise then you can do two exercises)

https://test-english.com/grammar-points/b1/defining-and-non-defining-relative-clauses/  (there are 3 exercises here)

https://www.englishexercises.org/makeagame/viewgame.asp?id=4219

https://www.ego4u.com/en/cram-up/grammar/relative-clauses/exercises?04

https://elt.oup.com/student/solutions/int/grammar/grammar_03_022e?cc=global&selLanguage=en

https://www.ego4u.com/en/cram-up/grammar/relative-clauses/exercises?06