HALLOWEEN

http://www.box.net/shared/rznk9bz2u7

More about subject and object questions

Here you can find exercises about subject and object questions.
http://www.english-zone.com/grammar/questions4.html
http://malvarosa-worksheets.blogspot.com/2009/07/subject-object-questions.html
http://www.slideshare.net/eoilleida/exercise-subject-vs-object-questions-presentation

PASIVE VOICE

More activities to practise
http://www.english-area.com/paginas/gramatica.htm#inicio
http://www.english-area.com/paginas/passivesentences1.htm
http://www.englisch-hilfen.de/en/exercises/passiv1.htm
http://www.learnenglishfeelgood.com/sp/ingles-voz-pasiva1.html
http://www.learnenglishfeelgood.com/sp/ingles-voz-pasiva2.html

To choose between pasive or active
http://www.ego4u.com/en/cram-up/tests/hadrians-wall
http://www.ego4u.com/en/cram-up/grammar/passive/exercises?simple-present-2
http://www.ego4u.com/en/cram-up/grammar/passive/exercises?simple-past-2

Voz Pasiva

On this page you can find explanations and exercises.

http://web.educastur.princast.es/ies/elpiles/ARCHIVOS/paginas/depar/ingles/mis_ejercicios/1bac.htm#pasiva

Present Perfect vs Past Simple

Look at these exercises. They are very interesting.
http://www.englishpage.com/verbpage/verbs5.htm
http://www.better-english.com/grammar/pspp1.htm
http://www.1-language.com/englishcoursenew/unit55_grammar_exs.htm

Listenig activities

Some of you have asked me for more listening activities. Here you are some of them. This is a very good idea to improve this skill.
http://www.mansioningles.com/listening06.htm
http://www.mansioningles.com/listening48.htm
http://www.mansioningles.com/listening12.htm
http://www.mansioningles.com/listening38.htm

Songs are a very good way to learn English. I´m sure you know this one.
http://www.saberingles.com.ar/songs/356.html

Present Perfect or Past Simple

http://www.englishgrammarsecrets.com/presentperfectorpastsimple/exercise1.html
http://www.englishgrammarsecrets.com/presentperfectorpastsimple/exercise2.html
http://www.englishgrammarsecrets.com/presentperfectorpastsimple/exercise3.html
http://www.englishgrammarsecrets.com/presentperfectorpastsimple/exercise4.html
http://www.englishgrammarsecrets.com/presentperfectorpastsimple/exercise5.html