It is known to all that every minute ( ) full use of ( ) the lessonswill benefit students a great d

题目

It is known to all that every minute ( ) full use of ( ) the lessonswill benefit students a great d
It is known to all that every minute ( ) full use of ( ) the lessonswill benefit students a great dael.
A.which makes:studying B.when made；to study C.that made; to study D.when is made:studying

答案

A
原因：时态要一致,都用一般现在时
of介词后应该用一个动名词
大家都知道,利用好每一分钟学习功课对学生很有好处.