Verb conjugation of "retarder" in French

In order to improve the language skills we changed some features on Vocabulix. From now on users can not only drill isolated lesson but adhere to a specific lesson plan. That means that they can set goals and seek help from other users.
Sorry that I answer so late but I was in Africa on vacation. What do you want to study in university? I think the most interesting are science studies, and it pays off, cause salaries are high.
I've actually found Vocabulix only because I could not conjugate an English word and then I suddenly was there: learning vocabulary, and meeting friends makes so much fun ...