这句英语句子的结构应该怎么分析啊?（句子如下）谓语动词是strive和be吗?
Its broad range of communications activities,channels and media strive to help employees manage and use corporate information they receive in their work and organisational relationships and in doing so,be fully engaged in the delivery of the company's strategy and the Nolia Way.
那么be引导的句子是一个什么样的成分呢？给什么做补充说明的呢？