◎ 题干
If you have some ____ in working out the problem, turn ____ your friends for help.
[     ]
A. difficulties; for
B. difficulty; to
C. troubles; to
D. trouble; round
◎ 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“If you have some ____ in working out the problem, turn ____ your friends for help. [ ]A. difficulties; forB. difficulty; to C. troubles; to D. trouble; …”主要考查了你对  【名词】【介词和介词短语】  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。