LaDictee.fr: Site offering free audio dictation files, for different levels. Proof reading. Offers links to punctuation, grammar and syntax interactive exercises.
LanguageGuide.com : A page designed to let you hear, learn and recognize the names and spelling of all the punctuation marks. Simply drag your mouse over each one to listen to and repeat its pronunciation.
University of Regina: Language Institute Language Labs. Question form. Listen to an answer and learn to form the corresponding question. Audio files. 10 questions.