◎ 题干
— John sings so well. Has he ever been trained?
— No. He learns all by himself. He ______ goes to any training class.
[     ]
A. usually
B. often
C. never
D. even
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“— John sings so well. Has he ever been trained? — No. He learns all by himself. He ______ goes to any training class. [ ]A. usually B. often C. never D.…”主要考查了你对  【频度副词】  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。