◎ 题干
You can't fancy what great trouble they have _______ the problem ________.
[     ]
A. to solve; being discussed   
B. solving; discussing
C. to solve; to discuss  
D. solving; being discussed
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“You can't fancy what great trouble they have _______ the problem ________.[ ]A. to solve; being discussedB. solving; discussingC. to solve; to discussD.…”主要考查了你对  【现在分词的被动式】【动名词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。