This is great practice of the Preterite vs Imperfect because of the feedback that is provided by the Colby University website. I created these answer sheets to complete the online exercises at Colby University during class. I give each student a copy. I show them the paragraphs on the Colby Web site using my LCD Projector. They fill in the boxes on the answer sheet and we go over the correct responses in class. I included the links next to the titles of each exercise to make it easy to go directly to that activity.