摘要： John waited at the bus-stop for nearly half an hour the bus finally arrived . A．when B．as C．before D．while
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John waited at the bus-stop for nearly half an hour the bus finally arrived .
A．when B．as C．before D．while
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John waited at the bus-stop for nearly half an hour the bus finally arrived .
A．when B．as C．before D．while
查看习题详情和答案>>John waited at the bus-stop for nearly half an hour _____ the bus finally arrived .
A. when B. as C. before D. while
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