We would like to take this ( ) to establish business relations with you.
A. step
B.opportunity
C.advantage
D.opening
出自:国家开放大学英语语法

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