English and mandarin Chinese. Learned German, Russian and Japanese when young from grandparents but after 20+ years of not using it, don't remember anything.
My wife speaks Portuguese, so she can wing Spanish and Italian pretty easily. And she still remembers her German pretty well.
Neither of us remember French from our school days. Canadian education for French in English provinces are terrible. Also just don't need it, so 20+ of not using it means I remember maybe 10 words.
Between the two of us, we got at least English, Chinese, Portuguese, spanish covered with some Italian and German.
I think some people are just better with languages. My grandfather speaks Chinese, English, German, Russian, Japanese and Latin fluently. Even not using certain languages like Japanese for 40+ years, he remembered everything on a vacation trip. Same with English, whenever he is in canada, he remembers his English. He spend 1/3 of his year in Germany before, so his German is probably best. He said he doesn't remember much russian, but I don't believe him since he also "doesn't remeber" Japanese.
Whereas for me, not using it for a few years means I forget everything. Maybe have to do with fluency, I was never fluent and only learned for a short while. Whereas he was fluent.