https://publicdomainvectors.org/es/vectoriales-gratuitas/Gato-de-la-escritura/59863.html
https://www.liveworksheets.com/worksheets/en/English_as_a_Second_Language_(ESL)/Letter_writing/Writing_paragraphs_gm1746450az
BOOK REVIEW
https://www.cristinacabal.com/advanced/bookreview.pdf
Practice
https://www.eltbase.com/quiz/546_01.htm
CONNECTORS OF CONTRAST
https://test-english.com/grammar-points/a2/however-although-time-connectors/
https://www.noslangues-ourlanguages.gc.ca/en/quiz/jeu-quiz-although-however-eng
https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-13109.php
https://www.englishgrammar.org/although-but-so-and-because/
CONNECTORS OF PURPOSE
Practice
https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-85663.php
https://www.englishexercises.org/makeagame/viewgame.asp?id=6268
https://www.myenglishpages.com/english/grammar-exercise-purpose.php
https://www.perfect-english-grammar.com/purpose-exercise.html
https://www.grammarbank.com/so-that-or-in-order-to-exercise.html
CONNECTORS OF ADDITION
https://wordwall.net/es-ar/community/connectors-of-addition
http://www.usingenglish.com/quizzes/220.htm
http://web2.uvcs.uvic.ca/elc/studyzone/570/pulp/hemp6.htm
http://web2.uvcs.uvic.ca/elc/studyzone/570/pulp/hemp7.htm
http://www.englishexercises.org/makeagame/viewgame.asp?id=5348
http://lrs.ed.uiuc.edu/students/fwalters/causeconnect.html
http://www.softschools.com/quizzes/language_arts/sequencing/quiz1341.html
http://www.internet4classrooms.com/skill_builders/cause_effect_language_arts_fourth_4th_grade.htm
https://www.liveworksheets.com/worksheets/en/English_as_a_Second_Language_(ESL)/Fact_or_opinion
eMAIL OF COMPLAINT
https://www.eltbase.com/quiz/019_05.htm
https://www.eltbase.com/quiz/019_02.htm
https://www.eltbase.com/quiz/019_01.htm
https://www.eltbase.com/quiz/019_03.htm
https://www.eltbase.com/quiz/019_04.htm
https://www.eltbase.com/quiz/019_08.htm
https://www.eltbase.com/quiz/019_09.htm
https://www.eltbase.com/quiz/019_10.htm
https://www.eltbase.com/quiz/019_06.htm
https://www.eltbase.com/quiz/019_11.htm
https://www.eltbase.com/quiz/019_12.htm
https://learnenglish.britishcouncil.org/skills/writing/b2-writing/letter-complaint
https://www.liveworksheets.com/worksheets/en/English_as_a_Second_Language_(ESL)/Letter_of_complaint
http://www.blairenglish.com/exercises/emails/exercises/email_complaint/email_complaint.html
https://quizlet.com/ca/203187576/email-complaint-vocabulary-esl-library-episode-12-flash-cards/