The interactive exercises are built around the theme of each lesson, with useful and common vocabulary. All the answers are voice-narrated. The exercises are designed to make you translate entire sentences, rather than just clicking on the correct translation of a word or verb form, which can lead to an inability to think independently. You can always check your answers. 80% of the words are either in the theory of the lesson or in the previous exercises, so looking up every word in the dictionary is unnecessary. Word memorization occurs in practice when you build phrases and sentences on your own.