Verb conjugation of "tremare" in Italian

Hi, I'm back from my vacation. It gives me pleasure to learn Spanish, because I can feel the improvement continously. I studied medicine in the University of Montpellier, a student city in France.
The last sentence is the hardest in the entire series. Writing may bore some people, but it is considered the best training in language learning. It is a skill that can lift you from intermediate to advanced level. Do not neglect it.
I think it is better to send an e-mail. Unfortunately, I have not received any response from you. I have answered your last letter a month ago. I would like to correct your mistakes.