Mr. Bob, ______ as a manager for many years, found it hard to be an ordinary clerk againA.having workedB.workedC.to have workedD.working
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A解析试题分析:考查现在分词的完成式做状语:句意:做经理很多年后,鲍勃先生发现很难做一个普通的职员了。根据句意,鲍勃先生是先做经理,然后才发现做秘书难的,当状语的动作发生在主句的动作之前,用现在分词的完成式做状语,选A。考点:考查现在分词的完成式做状语