◎ 题干
— When ______ the train ______ (leave)?
— In half an hour.
[     ]
A. did, leave
B. has, left
C. is, leaving
D. will, be leave
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—When ______ the train ______ (leave)?— In half an hour. [ ]A. did, leaveB. has, left C. is, leaving D. will, be leave …”主要考查了你对  【实义动词的现在分词】【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。