Verb conjugation of "donnern" in German

The bus left Havana and drove westwards towards a place called Viniales. After a short two hour ride we arrived there and once the bus entered the terminal we were greeted by dozens of people.
I have your letter sitting on my desk. But, in the last 2 months I have been working on some projects which were very time consuming. I will not be able to start anything new before October or November.
On the way back I remember watching a Diego Armando Maradona movie in the car's portable DVD player. He was praised as a Saint in this movie. I took it as a good preparation of thing ahead in Buenos Aires.