◎ 题干
—How long do you spend __________ your dog?
—Less than __________ hour.

[     ]

A. walking, an
B. walk, an
C. walking, a
D. walk, a
◎ 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“—How long do you spend __________ your dog? —Less than __________ hour. [ ]A. walking, an B. walk, an C. walking, a D. walk, a …”主要考查了你对  【不定冠词(a,an)】【动名词】  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。