Verb conjugation of "garantieren" in German

All people held signs with names on them and on one plate I saw name, of course misspelled. I went with the person to his oldtimer car. We drove to his cottage and I was surprised about the nice reception.
Thanks for the phone conversation. In the attachment, I placed a very brief overview of possible Spanish words that could be entered into the system for the vocabulary beginners lesson. Please have a look.
I was surprised that he charged 5 dollars extra (a total of fifteen instead of ten), because he had to take us to three different locations. I did not buy the whole thing and gave him ten bucks.