To reduce the _____ loss during the change, we must make sure we have the necessary skills.

A、productivity
B、producing
C、produced
出自:国家开放大学英语机考

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块