6th grade

Hobbies and Sports

http://www.esolcourses.com/content/topics/hobbies/english-words-for-hobbies.html

http://www.esolcourses.com/content/topics/hobbies/hobbies-picture-quiz.html

http://www.esolcourses.com/content/topics/sport/english-words-for-sports.html

http://www.esolcourses.com/content/topics/sport/sport-wordsearch.html

5th grade

Month Games:
http://learnenglishkids.britishcouncil.org/en/language-games/monkey-squash/months

http://learnenglishkids.britishcouncil.org/en/language-games/paint-the-words/days-and-months

7th grade

WH questions exercises:

http://www.englishexercises.org/makeagame/viewgame.asp?id=1898

http://www.bradleys-english-school.com/online/multiplechoice/whquestion.html