◎ 题干
—Tom, it's late. Why not go to bed?
—Jenny hasn't come back yet. I _______ for her.
[     ]
A. waited
B. have waited
C. am waiting
D. was waiting
◎ 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“—Alan, it's late. Why not go to bed?—Jenny hasn't come back yet. I _______ for her. [ ]A. waited B. have waited C. am waiting D. was waiting …”主要考查了你对  【现在进行时】  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。