（2015·北京卷）已知函数$f\left(x\right)=\sin x-2\sqrt{3}{\sin }^2\frac{x}{2}$．

（I）求f(x)的最小正周期；

（II）求f(x)在区间$0,\frac{2\mathrm{\pi }}{3}$上的最小值．

选择句子的翻译。

①请问、去超市怎么走？____       A. Nice to meet you.

②一直向前走，然后向右转____    B. Go straight on, then turn right.

③小明在学校附近。____              C.Excuse me. Where is the supermarket?

④见到你真高兴。____                 D. Xiaoming is near the school.