【单选题】【消耗次数：1】
The bus was____ the driver.
①
in charge of
②
in the charge of
③
take charge of
④
free of charge
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【简答题】
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fare ?
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随机题目
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①
可改善系统的快速性及平稳性；
②
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③
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④
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②
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③
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①
XT（1）XT(2)
②
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③
XT（1）=XT(2)
④
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