题目

I lost my way in complete darkness and, matters worse, it began to rain．        A．made        B．having made    C．making        D．to make 答案：D 解析: to make matters worse是固定用法，在本题中充当插入语。7．已知xy＜0，化简二次根式y$\sqrt{\frac{x}{{y}^{2}}}$的正确结果为（　　）A．$-\sqrt{x}$B．$\sqrt{x}$C．$-\sqrt{-x}$D．$\sqrt{-x}$