Every minute must be made full use in class.A. of studyingB. to studyC. to studyingD. of

问题补充：

Every minute must be made full use in class.

A. of studying

B. to study

C. to studying

D. of to study

答案：

A. of studying

B. to study

C. to studying

(答案→)D. of to study

解析：考查动词不定式做目的状语， make use of,意思是“利用”，make use of的宾语是Every minute被动是time is made use of，to study是目的状语，表示要充分利用时间来做什么，表示一种目的句意：每分钟都应该被利用在班级学习。选D。