◎ 题干
Russ and Earl were auto mechanics ______ the same pay, but Earl had more ambition.  
[     ]
A. earned  
B. to have earned
C. to earn        
D. earning
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“Russ and Earl were auto mechanics ______ the same pay, but Earl had more ambition. [ ]A. earnedB. to have earned C. to earnD. earning …”主要考查了你对  【过去进行时】  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。