Question

The maths problem is so difficult that none of them can          .

A．work out it

B．work it out

C．find out it

D．find it out

Answer 1

B

试题分析：句意：这个数学问题太难了以至于他们中没有一个人能够解出来。work out意为“解决出”；而find out意为“发现、找出”；这两个短语都属于动词+副词构成的短语，后面跟代词时需要将代词置于中间，所以A和B结构错误；故选B。