题目内容
How did you manage to get to the school on time_________you missed the school bus?
| A．when | B．if |
| C．once | D．because |
A
解析试题分析：考查状语从句。句意：既然错过了校车，你是怎样做到准时到校的？when除了有“当”的意思之外，还有“既然”的意思，相当于now that。故选A。
考点：考查状语从句
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