The workplace safety regulations______ helped to prevent serious accidents from

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问题 The workplace safety regulations______ helped to prevent serious accidents from occurring at the construction site.

选项 A、define
B、definitely
C、definite
D、definitions

答案 B

解析为修饰动词helped，空格处应填副词，故副词(B)definitely(明确地)为正确答案。动词(A)，形容词(C)和名词(D)在此处都不能修饰动词。

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