If better use is your free time you’ll make greater progress in that.A. spentB. takenC.

问题补充：

If better use is your free time, you’ll make greater progress in that.

A. spent

B. taken

C. made of

D. used of

答案：

A. spent

B. taken

(答案→)C. made of

D. used of

解析：make use of是固定用法，意思是利用，故选C。