If better use is your spare time you’ll make good progress in doing your business.A. spen

问题补充：

If better use is your spare time，you’ll make good progress in doing your business.

A. spent

B. made of

C. used for

D. taken

答案：

A. spent

(答案→)B. made of

C. used for

D. taken

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, …….。