I was on the highway _______ this car went past followed by a police car. They _

I was on the highway _______ this car went past followed by a police car. They _

题型:不详难度:来源:
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

答案
D
解析
考查连词和情态动词用法。因为go past(经过)是短暂性动词所以不能与while连用,while只能和延续性动词连用。When既可以与短暂性动词也可以与延续性动词连用。第二空表示对过去某时正在发生情况的肯定推测。句意:当一辆汽车从我旁边经过,后面跟着一辆警车的时候,我正在高速公路上。他们当时的速度至少150公里每小时。
举一反三
My mother is always warning me when I go out, “Don’t get off the bus ____it is stopping.”
A.untilB.beforeC.whileD.After

题型:不详难度:| 查看答案
We should try every way to develop education,            it means slowing down in other fields.
A.in case B.even ifC.only ifD.so that

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Many teenagers say that _____ they have a lot of friends, they really have no best friend.
A.whenB.whileC.ifD.because

题型:不详难度:| 查看答案
_____difficulty we will face, we should have confidence and try to solve it.
A.HoweverB.No matter howC.WhateverD.Whenever

题型:不详难度:| 查看答案
         the occasional visit, what else does Alan do for his kids?
A.ExceptB.In spite ofC.Apart fromD.Beside

题型:不详难度:| 查看答案
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