◎ 题干
__________ important for us __________ English well.
[     ]
A. It's, to learn
B. This is, to learn
C. It's, learning
D. This is, learning
◎ 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“__________ important for us __________ English well.[ ]A. It's, to learnB. This is, to learnC. It's, learningD. This is, learning…”主要考查了你对  【不定式】【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。