3C y 3D
Hello,
Here are some resources to study unit 3.

UNIT 3 RESOURCES

SHOULD, MUST, HAVE TO

http://www.aulafacil.com/cursos/l22661/idiomas/ingles/ingles-repaso-de-gramatica/ejercicios-should-must-have-to exercises

http://www.teachya.com/grammar/intermediate/must_should_have_to.php exercises

http://www.englishexercises.org/makeagame/viewgame.asp?id=6270 exercises

https://elt.oup.com/student/englishfile/intermediate/a_grammar/file03/nef_int_grammar03_a01?cc=ar&selLanguage=en exercises

EXTREME ADJECTIVES

http://www.onestopenglish.com/community/lesson-share/pdf-content/grammar/grammar-vocabulary-extreme-adjectives-worksheet/147585.article EXERCISES

https://quizlet.com/108642571/test TEST

https://quizlet.com/108642571/test LIST OF ADJECTIVES WITH PICTURES

https://clasejoseangel.files.wordpress.com/2010/11/extreme-adjectives.pdf exercises