问题补充:
Ten minutes has been made full of the problem.
A. using ; studying
B. use ; to study
C. to use ; to study
D. use ; studying
答案:
A. using ; studying
(答案→)B. use ; to study
C. to use ; to study
D. use ; studying
解析:考查句子结构。本题是一个被动语态,主动形式是make use of ten minutes.变成了被动语态Ten minutes has been made use of.后面的不定式表示目的状语。句意:为了了解这个问题,10分钟的时间已经被充分利用了。故B正确。