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The key to （） laws lies in devotion and responsibility of the staff concerned.

The key to （） laws lies in devotion and responsibility of the staff concerned.
A、enriching
B、enrolling
C、enlarging
D、enforcing
正确答案：D
解析:词汇与结构部分\辅导书\书A\词法A

标签：词法词汇结构

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