问题补充：
If better use is your spare 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…为固定短语。本题可以用还原法做题，即If you make better use of your spare time, …….
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