◎ 题干
Though I have often heard this song ______, I have never heard you ______ it.
[      ]
A. being sung; sang
B. sang; singing
C. sung; sing
D. to be sung; to sing
◎ 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“Though I have often heard this song ______, I have never heard you ______ it. [ ]A. being sung; sangB. sang; singingC. sung; sing D. to be sung; to sing…”主要考查了你对  【动词】【过去分词】  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。