2. 外语
  3. I’m sure he didn’t know(exact)______ what he was doing while the accident took place.

I’m sure he didn’t know(exact)______ what he was doing while the accident took place.

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问题 I’m sure he didn’t know(exact)______ what he was doing while the accident took place.
选项
答案exactly
解析 本题考查副词的用法。本句需要一个副词修饰宾语从句的谓语动词know，而exact是形容词，不能直接修饰动词作状语，必须转化成副词的形式。
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