Translation of controvertible in German

Your ask why i am learning English ? I made a trip two years ago, a vacation in a foreign country and I could not speak with other people. That was very bad for me. When I came back home I began to study English.
People on the bikes continued to drive around us although we were in the middle of the street. Supposedly this city has more than ten million inhabitants and more than three million bikes.
The next morning we got up at 4.30. At sunrise, one hour later, a taxi waited for us in front of the hotel. He would take us on a 2 hours private sightseeing tour around Arequipa, just before traffic started.