The following are sites you can go to and practice your skills:

Language Art Games:

http://www.teachervision.fen.com/reading-and-language-arts/games/5831.html

http://www.english-online.org.uk/games/gamezone2.htm

 http://games.pppst.com/languagearts.html

 Create funny stories while learning about parts of speech

http://www.eduplace.com/tales/index.html 

Vocabulary games

http://www.sheppardsoftware.com/web_games_vocab.htm

More grammar practice

www.pbskids.org

Look up those confusing words!

www.dictionary.com

Pratice with Greek and Latin roots/prefixes

http://teacher.scholastic.com/activities/athens_games/gamegreektome.htm