Question

【题目】New ideas sometimes have to wait for years before ________.

A. being fully accepted B. fully accepting

C. having fully accepted D. fully accepted

Answer 1

【答案】A

【解析】考查非谓语动词。句意：有时新的观点需要等待多年才能被完全接受。根据选项中都是短语，可判断before在此是介词，不是连词，因此后面用动名词，ideas与accept有逻辑上被动关系，因此本空用动名词被动语态。故选A项。