Ms. Arroya says that when workshop______

书海库2019-12-17  19

问题 Ms. Arroya says that when workshop__________begins to slow down, it may be time to hiremore workers.

选项 A. product   B. producerC. produceD. productivity

答案D

解析在when引导的状语从句中,主语要表示“工厂生产力”时,才能和动词slow down搭配使用,因此D为正确答案。
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