The teacher's explanation ________ this problem.


  1. A.
    threw lights upon
  2. B.
    threw light on
  3. C.
    make light on
  4. D.
    give light to
練習冊系列答案
相關習題

科目：高中英語 來源： 題型：

.The teache rfound ____ difficult to decide____ he would take with him to attend the

conference.

  A.it;whom        B.himself;who       C.this;whom      D.that;who

查看答案和解析>>

同步練習冊答案