◎ 题干
I was on the highway _______ this car went past followed by a police car. They ______ at least
150 kilometers an hour.
[     ]
A. when; should have been driving
B. while; would have driven
C. as; could have driven
D. when; must have been driving
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“I was on the highway _______ this car went past followed by a police car. They ______ at least 150 kilometers an hour. [ ]A. when; should have been driving B…”主要考查了你对  【从属连词】【现在完成进行时】  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。