Translation of Retainer

It actually happened to my cousin's youngest kid. He was repeatedly warned not to smoke in the courtyard of the school. At the end he found himself expelled from the school. It could have been an interesting experience for him though.
I've never been to America, but I wanna fly to New York in the end of this year, maybe go to Washington and possibly to LA. It would be nice one months to learn English there. I started to learn now.
Germany has a very diverse geography in the North we have the port cities of Hamburg and Bremen, and people are more open, there are a few hills up there. Then you should also visit Berlin.