I went to a high school that was economically orientated, so they taught us several languages. I was lucky to learn English, French and Spanish. Adding my mother tongue German, I spoke 4 languages fluently at age nineteen. ​

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The result:

I speak English on C1 level and German on C2 level. 

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I have not used French ever since my final exam in high school, but I always kept my Spanish going.