It is important______managers make sure all the employees comply with safety reg

游客2025-06-14  3

问题 It is important______managers make sure all the employees comply with safety regulations at all times.

选项 A、to
B、what
C、that
D、upon

答案 C

解析 语法:名词性从句1.空格后句子结构完整,to和upon不能作连词,因而A、D选项排除。2.It在句中作形式主语,真正的主语是空格后句子。3.从句不缺少任何语法成分,应使用连接词,因此(C)为正确选项。
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