Verb conjugation of "justifier" in French

Many of our friends would love to do the same but do not have the courage to think outside of the box. For us it is a privilege to be able to go whenever we want. Naturally, it comes at the expense of a high salary.
The idea is to use the sourcing to get as much information as possible about learning abilities and disabilities in average. This way we can determine and forecast best practices for language learners based on some parameters.
I now live in Spain. I have moved too 2 years ago. I have finished my studies and in February I'm going to high school. I have not spoken German for a long time, actually since I was a kid.