You can't imagine what( )great difficulty we have had working out such( )difficult problem.

分类: 作业答案 • 2022-07-20 11:14:42

问题描述：

You can't imagine what( )great difficulty we have had working out such( )difficult problem.
A a;the B不填; Ca;a D不填;the
其实主要考difficulty的规则和不规则用法,

答

difficulty表示“困难,难处”,为不可数名词,其前不加冠词.
problem是可数名词,前可加冠词,此处such a difficult problem 表示如此一个难题.
故答案应为：不填,a.