Modal Verbs

Write, complete and translate 

http://www.myenglishpages.com/site_php_files/grammar-exercise-modals.php

http://www.englishexercises.org/makeagame/viewgame.asp?id=2229#a

http://esl.fis.edu/grammar/multi/modal1.htm

http://www.english-grammar-lessons.com/should/exercise5.swf

http://www.learnenglishfeelgood.com/esl-mixed-modals1.html#

http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-9225.php

Passive Voice 1ros Medios

http://www.ego4u.com/en/cram-up/grammar/passive/exercises

http://www.ego4u.com/en/cram-up/grammar/passive/exercises?simple-past

http://www.ego4u.com/en/cram-up/grammar/passive/exercises?simple-present

http://www.ego4u.com/en/cram-up/grammar/passive/exercises?02

http://www.englisch-hilfen.de/en/exercises/active_passive/sentences_simple_present.htm

http://www.englisch-hilfen.de/en/exercises/active_passive/sentences_simple_past.htm

http://www.englisch-hilfen.de/en/exercises/active_passive/form_sentences_simple_past.htm

Comparative and Superlative adjectives (8vo año)

Comparative Adjectives

http://www.ego4u.com/en/cram-up/grammar/adjectives-adverbs/adjectives/compare-exercises?1

http://www.ego4u.com/en/cram-up/grammar/adjectives-adverbs/adjectives/compare-exercises?2

http://www.ego4u.com/en/cram-up/grammar/adjectives-adverbs/adjectives/compare-exercises?3

http://www.ego4u.com/en/cram-up/grammar/adjectives-adverbs/adjectives/compare-exercises?4

http://www.ego4u.com/en/cram-up/grammar/adjectives-adverbs/adjectives/exercises

http://www.ego4u.com/en/read-on/countries/usa/tour/los-angeles#exercises

http://www.ego4u.com/en/read-on/countries/uk/tour/london#exercises

Superlative Adjectives

https://elt.oup.com/student/solutions/elementary/grammar/grammar_08_022e?cc=cl&selLanguage=en

http://www.kico4u.de/english/uebungen/adverbundadjective/thebest.htm

Question Tags

Exercises about question Tags(3ro medio)

http://www.englishgrammarsecrets.com/questionstags/exercise1.html

http://www.englishgrammarsecrets.com/questionstags/exercise2.html

http://www.englishgrammarsecrets.com/questionstags/exercise3.html

http://www.englishgrammarsecrets.com/questionstags/exercise4.html

http://www.englishgrammarsecrets.com/questionstags/exercise5.html

http://www.englishgrammarsecrets.com/questionstags/exercise6.html