◎ 题干
Well done ! The customers were  _____ by your wonderful body language.
[     ]
A. to impress                                  
B. to have been impressing
C. to have been impressed                  
D. to be impressing
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Well done ! The customers were_____ by your wonderful body language. [ ]A. to impressB. to have been impressingC. to have been impressedD. to be impressing…”主要考查了你对  【不定式的完成式】【不定式的被动式】  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。