when 和till 的用法区别?we were waiting for you _________ it got dark yesterday.本题的选项有:when while since till 填when 应该是说得通的吧,填till也是说得通的,怎么区别?

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when 和till 的用法区别?we were waiting for you _________ it got dark yesterday.本题的选项有:when while since till 填when 应该是说得通的吧,填till也是说得通的,怎么区别?

when 和till 的用法区别?we were waiting for you _________ it got dark yesterday.本题的选项有:when while since till 填when 应该是说得通的吧,填till也是说得通的,怎么区别?
when 和till 的用法区别?
we were waiting for you _________ it got dark yesterday.
本题的选项有:when while since till
填when 应该是说得通的吧,填till也是说得通的,怎么区别?

when 和till 的用法区别?we were waiting for you _________ it got dark yesterday.本题的选项有:when while since till 填when 应该是说得通的吧,填till也是说得通的,怎么区别?
答案应填 till,这样意思最通顺,句意为:我们昨天等你一直等到天黑.
做这类题目时要注意:这样的题目其实不是语法问题,只是个语境问题,即语境最恰当者为最佳答案.

拜托,这是很明显的语法问题。till和长状态配合使用。如果用when,这句应该改成We had waited for you for 2 hours when it got dark yesterday.