I can never imagine a child like him___work out such a difficult problem.

题目

I can never imagine a child like him___work out such a difficult problem.
A.being able to B.to be able to C.is able to D.was able to
谢谢,请说明理由

答案

B 去掉一些修饰成分,句子主干是I imagine sb.to be able to do sth.这样就很清楚了,再加上成分：I (can never) imagine (a child like him) to be able to (work out such a difficult problem)....