http://www.esolcourses.com/topics/christmas.html
http://blog.languagesuccesspress.com/?tag=christmas-idioms
http://www.bloomsbury-international.com/blog/2014/12/12/top-3-favourite-christmas-idioms-and-how-to-use-them/
http://www.esolcourses.com/content/topics/christmas/pre-intermediate/christmas-crossword.html
http://www.learn-english-today.com/wordgames.html
http://web2.uvcs.uvic.ca/elc/studyzone/200/reading/xmas3.htm
http://www.englishpage.com/holidays/christmasprintable.html