Verb conjugation of "fluctuate" in English

However, I must point out that all my students are interested in language labs, and CDs. Vocabulix systems appear to provide unique results. We would have to review the situation soon.
I have not been in eastern Germany for a long time, because I have never really had time to travel. What do you do for living and in your leisure time, like the weekends and evenings.
Have you ever done something like that in Spanish? I also think that we should see each other when you're close, I can help you with Spanish, and you can do the same for me in English. Do we have a deal?