Pre-Intermediate Level

Grammar

http://www.esl-lounge.com/student/grammar-guides/grammar-pre-intermediate.php

Grammar

http://www.perfect-english-grammar.com/

Grammar, Listening, Vocabulary and Pronunciation

https://elt.oup.com/student/englishfile/preint3/?cc=gb&selLanguage=en

Reading, Listening and Grammar

http://www.esolcourses.com/content/topicsmenu/pre-intermediate.html

Reading

http://englishteststore.net/index.php?option=com_content&view=article&id=244&Itemid=284

Reading Vocabulary Gap–Fill

http://www.esl-lounge.com/student/reading-pre-intermediate.php

Listening (Listen and Rearrange the Text)

http://englishteststore.net/index.php?option=com_content&view=article&id=14003&Itemid=209

Listening 

(Please right click open in new tab and the mp3 player audio will open in a separate window)
http://www.esl-lounge.com/student/listening-pre-intermediate.php

Listening

http://www.teachya.com/listening/listening_exercises/pre-intermediate.php

Video + Listening + Exercises

http://www.real-english.com/new-lessons.asp

Choose "Pre-Intermediate" from the lessons available.

Language Games

http://www.eslgamesworld.com/members/games/levels/medium/index.html