Present perfect

agendaweb.org/verbs/present_perfect-exercises.html

The simpsons family 2

https://youtu.be/J_x-u-VIJzs

The simpsons family

https://youtu.be/0dl7a5o3iao

Pronouns

https://agendaweb.org/grammar/personal-pronouns-exercises.html

To Be

https://agendaweb.org/verbs/to-be-exercises.html

Nationalities

http://www.vocabulary.cl/Basic/Nationalities.htm
https://agendaweb.org/vocabulary/countries_nationalities-exercises.html

Was were

http://www.ingenierogeek.com/2013/11/curso-ingles-medio-pasado-verbo-to-be-oraciones-ejemplos-was-were.html

https://www.englisch-hilfen.de/en/exercises/tenses/was_were.htm

http://www.englishexercises.org/makeagame/viewgame.asp?id=5211

https://agendaweb.org/verbs/to-be-past-exercises.html

Comparatives and superlatives

www.ef.com.mx/recursos-aprender-ingles/gramatica-inglesa/comparativo-superlativo/

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

https://www.google.com.mx/url?sa=t&source=web&rct=j&url=http://www.englishexercises.org/makeagame/viewgame.asp%3Fid%3D6009&ved=0ahUKEwiOzfWd5JDWAhVC4yYKHYpYD2QQFggqMAE&usg=AFQjCNGM9CyuS_p_NF_twV0I7_cxw0x3Fw
https://www.google.com.mx/url?sa=t&source=web&rct=j&url=http://www.myenglishpages.com/site_php_files/grammar-exercise-grammar-comparatives-superlatives.php&ved=0ahUKEwiOzfWd5JDWAhVC4yYKHYpYD2QQFgg1MAI&usg=AFQjCNGO6XGdcQFzZeTwHIbv8jpWfgRbiw

English 1/2017

http://www.talkenglish.com/grammar/
Grammar - Basic English Grammar lessons - Talk English

http://www.englisch-hilfen.de/en/
Learning English - Exercises, Grammar, Vocabulary, Tests, Games

http://www.stgeorges.co.uk/online-english/english-grammar-exercise-for-beginners
English Grammar Exercise for Beginner - St George International

http://www.learn-english-today.com/lessons/exercise-list.html
English grammar exercises, with answers. | Learn English http://www.learn-english-today.com/lessons/exercise-list.html
English grammar exercises, with answers. | Learn English Today
https://www.englishgrammar.org/exercises/
Online Exercises - English Gramma