there was nothing ___her doing soto preventto keep keptprevented

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• There was nothing to_____so.中间填 keep her from doing 还是 prevent her doing 讲下理由.
• there was nothing ___her doing soto preventto keep keptprevented
• 高中数学函数题目 在线等答案或中文翻译题目是英文版本的.求题解,需要详细过程.或者是题目的中文翻译,都可以1. Sara was sitting on a swing, talking about the mathematics she had been doing at school and swinging gently to and fro. She noticed that the period of one complete swing was 3 seconds and that if she did nothing to keep going, the amplitude of her motion decreased from 1 metre to 50cm in 2 minutes. If Sara’s horizontal displacement is x metres after t second, find a function of the form x=Ae-ktco
• There was nothing to_____so.中间填 keep her from doing 还是 prevent her doing 讲下理由.
• There was nothing to see和There was nothing to be seen.有什么区别,中文意思分别是什么?
• There is nothing doing.通不通?