"i challenged them on their behaviour on this" in German I challenged them on their behaviour/on this. Ich stellte sie wegen ihres Benehmens/diesbezüglich zur Rede. Detailed translations for "i challenged them on their behaviour on this" I challenged them on their behaviour/on this. I challenged them on their behaviour/on this. Ich stellte sie wegen ihres Benehmens/diesbezüglich zur Rede.