单选题
______ good use you've made of your time to study, there's still room for improvement.
【正确答案】
A
【答案解析】[考点] 引导词 [解析] 易错选B。引导词引导状语从句并在从句中作定语，修饰名词use而不是形容词good。只要是adj. +n.结构一般都用what或such修饰，如what great progress, such fine students，也有个别例外，如how many people。