Sometimesnewideashavetobetestedma

发布时间：2020-07-26 03:21:47

Sometimes new ideas have to be tested many times before_________.A.accepting fullyB.being fully acceptedC.fully acceptingD.fully being accepted

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B解析由句意可知，应用分词的被动式，副词须放在助动词之后，行为动词之前。
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