The document includes two versions of the same activity that matches a three minute YouTube video called "The Note." Link included in document. The viewer is instructed to stop the video at certain time marks and answer a question, conjugate verbs, etc.
Form 1 is designed for lower level students who are learning preterit vs. imperfect.
Form 2 is designed for upper level students reviewing preterit and imperfect and includes some future tense, as well.
Answers will vary for most questions, so no answer key is needed. I typically do this together as a class or in cooperative groups, allowing students to bounce ideas off of each other, make predictions, and the like.