(?) What is the capital of the Netherlands?
= Amsterdam
x Rotterdam
x Utrecht
x The Hague

(?) What is the capital of Serbia?
= Belgrade
x Novi Sad
x Niš
x Kragujevac

(?) What is the capital of Spain?
= Madrid
x Barcelona
x Seville
x Valencia

(?) What is the capital of Belarus?
= Minsk
x Barysaw
x Salihorsk
x Maladzyechna

(?) What is the capital of Poland?
= Warsaw
x Kraków
x Łódź
x Wrocław