You should read this manual (careful) ________before you start to use the device

游客2023-09-29 79

问题 You should read this manual (careful) ________before you start to use the device.

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答案 carefully

解析空格前的句子结构完整，不缺任何主要成分，又根据空格前的动词短语read this manual可知，此处需要填入副词修饰动词read，因此空格处应填入careful对应的副词形式carefully，意为“仔细地，小心地”。

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