◎ 题干
---How much difficulty did you have________________ this problem?
---_____________. It's quite easy.
A.to solve, Nothing B.solving; NoneC.to solve, NoneD.solving; Nothing
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“ ---How much difficulty did you have________________ this problem? ---_____________. It's quite easy.A.to solve, Nothing B.solving; NoneC.to solve, NoneD.so…”主要考查了你对  【实义动词的单数第三人称形式】【实义动词】【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。