Verb conjugation of "schmunzeln" in German

Furthermore, a certain personal relationship emerges among the users. An identification of the students with the language school is built. All this helps to study Spanish for the individual student.
I have even met someone who invited me to come and visit. It was an older couple who were renting apartments for language students. Well, actually there are agencies that offer the same as this couple, but I'm open.
My Spanish is weak, and I need to improve it here. But it is very difficult because I have many other things to do. I must take care of my family and my friends and have no time for Spanish.