◎ 题干
If you are weak              a subject,              and asking a teacher for advice can help.
[     ]
A. at; working
B. in; work hard
C. at; work hard
D. in; working hard
◎ 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 are weaka subject,and asking a teacher for advice can help. [ ]A. at; working B. in; work hard C. at; work hard D. in; working hard …”主要考查了你对  【动名词】【介词】  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。