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

问题补充：

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

A. is spent on

B. is made of

C. is used for

D. is taken up

答案：

A. is spent on

(答案→)B. is made of

C. is used for

D. is taken up

解析：

这题考查词组make better use of 的被动式，better use做为主语时，make of就用被动了，选B。句意是：如果更好的利用空余时间，你的事情会做得更好。选B。