我已经通过安排一系列会议开了个头。

I've ___started ___the ___ball ___rolling by setting up a series of meetings.

为了让募捐活动启动起来，她以一笔慷慨的个人捐款开了个头。

To get the fundraiser going, she ___set ___the ___ball ___rolling with a generous personal donation.

他那个有见地的问题引发了一场非常富有成效的小组讨论。

His insightful question ___set ___the ___ball ___rolling for a very productive group discussion.