Verb conjugation of "bestehen" in German

He also told me that he had build his scooter by himself. I could not understand how a doctor was able to build such a machine on his own. It seems that the circumstances made people capable of many things.
Anyway, once we arrived at the guest house the rules were explained: Washing my Jeans would be 2 dollars, a pair of socks 1 dollar and so on. I did not feel comfortable with these people.
The following day we took a boat trip to see the Los Glaciares National Park, where many glaciers formed hugh lakes. Many ice bergs were floating in these lakes and some of them had bizarre light blue colors.