◎ 题干
It’s so difficult a question. I think he will have problems ______ .
[     ]
A. work it out    
B. working it out    
C. in working out it  
D. work out it
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“It’s so difficult a question. I think he will have problems ______ .[ ]A. work it outB. working it outC. in working out it D. work out it…”主要考查了你对  【动词短语】  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。