◎ 题干
Mr. Bob, ______ as a manager for many years, found it hard to be an ordinary clerk again.
A.having workedB.workedC.to have workedD.working
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“ Mr. Bob, ______ as a manager for many years, found it hard to be an ordinary clerk again.A.having workedB.workedC.to have workedD.working…”主要考查了你对  【现在分词的被动式】【现在分词】【不定式的被动式】【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。