Take quizzes (e.g. reading comprehension tests) created for Google Docs documents using Bjorn's Quiz Builder.
Bjorn's Quiz Builder is both a web app and an add-on to Google Docs for creating quizzes re subject documents. This add-on (Quiz Taker) allows viewers of these subject documents to take these quizzes. The answers are automatically forwarded to the subject document author when submitted. Read more at https://www.backlund.org/app.aspx?about=QuizBuilderAddOn