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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 容易
  • 浏览 129

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
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ThoughIhaveoftenheardthissong.