Every minute is made full use of our lessons before the exam.A. studyingB. studiedC. to s

问题补充：

Every minute is made full use of our lessons before the exam.

A. studying

B. studied

C. to study

D. being studied

答案：

A. studying

B. studied

(答案→)C. to study

D. being studied

解析：考查不定式做目的状语：句意：在考试前每分钟都要被充分利用来学习功课。Make full use of的宾语是every minute，不定式是目的状语，选C。