该剧首演之夜，导演很紧张。

The director was nervous before the ___opening night of the play.

在开场白中，演讲者概述了会议的主要议题。

In her ___opening remarks, the speaker outlined the main themes of the conference.

为了庆祝新店开业，他们为前100名顾客提供了特别折扣。

To celebrate the ___opening of the new store, they offered special discounts to the first 100 customers.