Verb conjugation of "grossir" in French

I have studied French for many hours per week, and I've even lived in Geneva for a while... my French was good than. Today, I have forgotten most of it. I have to re-learn and Vocabulix can help.
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.
Hello, my name is Rick and I come from Mexico, I live in the capital Mexico City which is located in the center. I speak Spanish and German as my mother tongue and I can help you with either one.