代表们聚集在主会议厅参加年度会议。

The delegates ___assemble in the main hall for the annual conference.

经理迅速组建了一个特别工作组来处理这个紧急问题。

The manager quickly ___assembled a task force to address the urgent issue.

抗议者开始在广场聚集，要求政治改革。

Protesters began to ___assemble in the square, demanding political reform.