If you want to practice only irregular tenses you can click on the checkbox and mark this feature before starting the verb exercises.
May, Vancouver, Canada: 'I am using your system in our computer lab. My students and me are very satisfied with your product. Thank you for offering this product for free.'
Centro Internacional de Idiomas - 'One on one learning' on the Caribbean Sea, host families, many sports activities, EcoTourism. Learn Spanish at Habla Hispana in San Miguel de Allende.