Guia extra alumnos inglés 3

http://www.englishpage.com/verbpage/simplepast.html

http://www.englishpage.com/verbpage/simplepast.html

http://www.really-learn-english.com/simple-past-exercises-es.html#01

http://www.really-learn-english.com/simple-past-exercises-es.html#02

https://www.ego4u.com/en/cram-up/vocabulary/much-many

http://www.agendaweb.org/grammar/comparative-superlative-exercises.html

http://www.grammar.cl/english/how-much-how-many.htm

http://www.vitutor.com/gramatica_inglesa/nouns/nouns_ej7.html

http://www.agendaweb.org/grammar/any_some-exercises.html

https://www.ego4u.com/en/cram-up/vocabulary/some-any/exercises