This Grammar Bytes site shares an interactive commas quiz. Given two options per question, students will choose the option that will fix the comma error. A downloadable handout is available to keep track of the students' answers.

Complete the exercise that tests your understanding of past or present tense.

Practice answering questions with affirmative usted or ustedes commands and a direct object pronoun. Stem-changers,spelling changes, regular and irregular formal commands are included in this Colby College exercise.