The agency,______ to set and enforce health standard for American workers, has b

游客2023-11-11 26

问题 The agency,______ to set and enforce health standard for American workers, has been promising a cotton dust standard for several years.

选项 A、which is
B、which it is
C、whose job it is
D、whose job is

答案 C

解析应选非限定性定语从句whose，job it is，相当于it is the agency’s job to set and enforce．

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