good use you’ve made of your time to study there’s still room for improvement.A. ThoughB

问题补充：

good use you’ve made of your time to study, there’s still room for improvement.

A. Though

B. That

C. Whatever

D. However

答案：

A. Though

B. That

(答案→)C. Whatever

D. However

解析：考查状语从句。Whatever引导让步状语从句，句意：无论你多么利用时间来学习，但仍然有上升的空间。选C。