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

问题补充：

If better use is your spare time, you’ll make greater progress in that.A. spentB. takenC. made ofD. used of

答案：

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, …….