Practise English!

Testa gamla nationella prov

http://nafs.gu.se/prov_engelska/exempel_provuppgifter/engelska_6_exempeluppg

Guessing words - prefixes and suffixes

Easy game for practising and learning about some common prefixes and suffixes:
http://www.funenglishgames.com/grammargames/prefixsuffix.html

Some alternatives:
http://www.englishmedialab.com/Quizzes/advanced/prefixchoice.htm
http://www.englishmedialab.com/Quizzes/advanced/prefixmeaningmatch1.htm
http://www.englishmedialab.com/Quizzes/advanced/prefixwordbase.htm
http://www.englishmedialab.com/Quizzes/advanced/prefixwordbase2.htm

The following is a very comprehensive list of pre- and suffixes with many exercises that demand good knowledge of English. Try it and challenge yourself!
http://www.uefap.com/vocab/build/building.htm

Understanding context (sammanhang)

This is a page with games where you practise connecting words (sammanhangord) in English.
http://glosor.eu/ovning/sammanhangsord.3446282.html
http://glosor.eu/ovning/bra-bindeord-engelska.2739476.html

Texts in English

TIME magazine has a special website for kids and teens:
http://www.timeforkids.com/
And this is a news site about Sweden
http://www.thelocal.se/

Example of texts that you can read in Swedish first:

http://www.sydsvenskan.se/malmo/donationspappa-far-inte-avsaga-sig-faderskapet/
http://www.thelocal.se/20140227/swedish-man-father-to-twins-despite-lying-wife

http://www.svd.se/nyheter/inrikes/borg-motte-gay-aktivister-i-uganda_3304670.svd
http://www.thelocal.se/20140225/swedish-minister-meets-ugandan-gay-activists-anders-borg-lgbt-homosexuality

For listening practise

http://lyricstraining.com/

More word practise

Free Rice
Visuwords
Glosboken

Oregelbundna verb

http://www.englisch-hilfen.de/en/exercises_list/verbs.htm