问题描述：
关于until和when的选择题
是一道完形填空,里面有一段是
When all the seats were taken,the driver started the engine.The conductor began to collect fares.When she came to an old man in worn-out clothes,he explained that he had spent all his money when he had accidentally got on a wrong bus and now he was trying to go home.On hearing this,she ordered the old man to get off the bus.The old man was almost in thears as he begged her to let him take the bus home.The driver took the conductor's side and repeated the conductor's command.
The woman was watching the incident.(________)the driver and the conductor raised their voices at the old man,she interfered.
上面这个括号里应该选择 When 还是 Until呢?2个好像都可以,但是标准答案说是when.
是一道完形填空,里面有一段是
When all the seats were taken,the driver started the engine.The conductor began to collect fares.When she came to an old man in worn-out clothes,he explained that he had spent all his money when he had accidentally got on a wrong bus and now he was trying to go home.On hearing this,she ordered the old man to get off the bus.The old man was almost in thears as he begged her to let him take the bus home.The driver took the conductor's side and repeated the conductor's command.
The woman was watching the incident.(________)the driver and the conductor raised their voices at the old man,she interfered.
上面这个括号里应该选择 When 还是 Until呢?2个好像都可以,但是标准答案说是when.
问题解答：
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