Question

It is known to all that every minute ____ full use of____ the lessons will benefit students a great deal．

1. A.
   which makes； studying
2. B.
   when made； to study
3. C.
   that made； to study
4. D.
   which is made； studying

Answer 1

B
这题考查状语从句的省略句（省略了主语+be动词）原句的正常顺序是： it is known to all that when ( it is ) made use of to study the lessons, every minute will benefit students a great.省略的it 指代的就是every minute因为主语一致，所以省略了主语和be动词。第二空的不定式是目的状语，译为：众所周知，如果每分钟都被充分地利用来学习课程的话，那将使学生受益匪浅。选B