◎ 题干
----Can he work out the maths problem?
----I think _____ hard for him to work it out.
A.it’sB.that’sC.this isD.they’re
◎ 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“----Can he work out the maths problem? ----I think _____ hard for him to work it out.A.it’sB.that’sC.this isD.they’re…”主要考查了你对  【人称代词】【物主代词】【it的用法】  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。