Re: multilingualism
"Yes, but it's easy for pretty much anyone else. They learn their national language + English."
Generally include a third (second foreign) language and in some cases even more (I had English, French and German as modern foreign languages at school, together with Latin and classic Greek). As for which language to choose for native English speakers, I would recommend choosing easy ones like German and French or Spanish, Dutch and the Slavic languages are generally a lot more difficult for various reasons and non-European languages are a completely different kettle of fish (yes, I started on Thai and know a couple of phrases in Japanese and Vietnamese).