Comparative and superlative

http://www.mansioningles.com/gram13_ej1.htm
http://www.saberingles.com.ar/curso/lesson12/05.html
http://www.saberingles.com.ar/curso/lesson12/06.html
http://www.english-zone.com/grammar/compare1.html
http://isabelperez.com/comp.htm
http://isabelperez.com/super.htm
http://isabelperez.com/super-sign.htm

Music

A song from a popular film for teenagers.
http://www.saberingles.com.ar/songs/342.html

Listening

More activities to practise this skill.
Try them! They´re very useful.
http://www.mansioningles.com/listening57.htm
http://www.mansioningles.com/listening56.htm
http://www.mansioningles.com/listening55.htm

Past Simple or Continuous

Here you can find some activities to practise with these verb tenses
http://www.nonstopenglish.com/lang/es/allexercises/Grammar/Grammar-past.asp
http://perso.wanadoo.es/autoenglish/gr.pascon.i.htm
http://perso.wanadoo.es/autoenglish/gr.pascon.p.htm