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题目:Another driver had just driven into the back of Jack's car ______ he was waiting at some tr

问题描述:

Another driver had just driven into the back of Jack's car ______ he was waiting at some traffic lights.
A.since B.once C.while D.during

考点提示:副词,副词的比较级,疑问副词,连接副词



最佳答案:

B
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