People don't ask unmarried people Why are you single?.
人们不会问未婚的人“你为什么不结婚?”。
Did you see the special last night?
昨晚你看特别节目了吗?
I am sorry that you have a disagreement with your father. Personally, I think it is important to follow your interests and your abilities, and it sounds as though you have plenty of both of these already.