◎ 题干
Mary is said _____ in the supermarket for 5 years, but I don't know why she resigned last month.
[     ]
A. to have been working
B. work
C. to be working
D. to have worked
◎ 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“Mary is said _____ in the supermarket for 5 years, but I don't know why she resigned last month. [ ]A. to have been workingB. work C. to be workingD. to ha…”主要考查了你对  【不定式的完成式】  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。