In my experience living in The Netherlands, that's usually Dutch, English and German, but strangelly not French (or at least nowhere as good as the other ones).

That said it's the place were I've met the most natives who could actually speak some more unusual to learn language (like Portuguese, Japanese, Mandarin and so on) - from my sample (and I lived and worked there almost a decade) the average Dutch person doesn't know that many languages but there are a lot of Dutch people (more than what I've noticed in other countries) with a real interest in learning languages beyond what they're taught at school, just for fun rather than out of need.