It is clever _ you ti work _ such a difficult maths problem within ten minutes.

分类: 作业答案 • 2021-12-28 15:06:10

问题描述：

It is clever _ you ti work _ such a difficult maths problem within ten minutes.
A.for,at B.for,out C.of,out D.of,on

答

C
work out是固定搭配,意思是算出排除AD
第一个空是说你聪明不是所以用of
就像good for you good of you 是你人好