What is the main contribution to the latest problem according to Cathy?

选择一项:

A.
Too much training.


B.
Very little concentration.


C.
Frequent absence.
出自:国家开放大学-管理英语4

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