◎ 题干
—Why are you late for school today ?      
—I'm sorry, Sir. When I got to the bus stop, the bus _____.      
[     ]
A. left
B. had left
C. is leaving
D. has left
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—Why are you late for school today ? —I'm sorry, Sir. When I got to the bus stop, the bus_____. [ ]A. left B. had left C. is leaving D. has left …”主要考查了你对  【实义动词】【一般过去时】  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。