Online Exercises for Two-Way-Prepositions in German
Links last checked: Feb. 18, 2011

Worksheet with explanations and exercises: http://www.nthuleen.com/teach/grammar/wechselpraeps1.html
(=> click on "Answer Key" for the solutions to the exercise tasks)

Explanations in English: http://german.about.com/library/weekly/aa052101a.htm

Multiple-Choice and gap-fill exercises: