Mr.Johnson，________ as a manager for many years，found it hard to be an ordinary clerk again.
A．having worked B．worked
C．to have worked D．working
Mr.Johnson，________ as a manager for many years，found it hard to be an ordinary clerk again.
A．having worked B．worked
C．to have worked D．working
A [考查非谓语动词。句意：由于已经当经理很多年了，Mr.Johns
on发现重新做回一名普通职员很难。主语Mr.Johnson与work之间为逻辑上的主动关系，故应用现在分词形式，由空后的时间状语“for many years”可知，应该用完成式。]