If the whole surgery （）beforehand carefully, there would have been a better result.<br>A.was planned<br>B.has been planned<br>C.had been planned<br>D.were planned

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If the whole surgery （）beforehand carefully, there would have been a better result.
A.was planned
B.has been planned
C.had been planned
D.were planned

参考答案

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华北水利水电大学水利工程施工