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    精英家教网 > 高中英语 > 题目详情
    ---I’m sorry, but there is no smoking on this flight.
    ---Oh, I _____that. Sorry, I won’t again.
    A．don’t knowB．didn’t knowC．won’t knowD．haven’t known
    B

    试题分析：考察时态。句义：—对不起。在飞机上不能抽烟。—哦！我之前不知道这点。我以后不会再这样做了。根据句义可以在说话之前不知道在这里禁止抽烟。故使用一般过去时。B正确。
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