For more information and exercises on prepositions, visit the following websites:
ESL Quizzes- Prepositions: A self-study quiz.
Prepositions: Locators in Time and Place: From The Guide to Grammar and Writing, which is sponsored by the Capital Community College Foundation.
Prepositions: From the English Language Centre Study Zone, University of Victoria, British Columbia, Canada.
First Steps to Starting Your Own Business - 8/7/2014
Veteran's Summit and Town Hall Meeting - 8/7/2014
Freshman Registration Day - 8/9/2014
Workplace Communications - 8/19/2014