他受雇于这家电视网已经五年了。

He has been employed by the ___network for five years.

这家国家电视网络宣布了一个新的纪录片系列。

The national television ___network announced a new documentary series.

一家主要广播网络将现场直播这个活动。

A major broadcasting ___network will air the event live.