◎ 题干
I _____ carefully but could _____ nothing.
[     ]
A. listened; hear
B. heard; listen
C. listened to; hear
D. hear; listen to
◎ 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“I _____ carefully but could _____ nothing. [ ]A. listened; hear B. heard; listen C. listened to; hear D. hear; listen to …”主要考查了你对  【实义动词】【动词短语】  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。