◎ 题干
–It’s       hard work to achieve a balance between schoolwork and hobbies.
–So it is, but we have to.
A.a B.an C.the D.不填
◎ 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 hard work to achieve a balance between schoolwork and hobbies.–So it is, but we have to.A.aB.anC.theD.不填…”主要考查了你对  【定冠词(the)】【不定冠词(a,an)】【零冠词】  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。