阳光从洞穴顶部的开口照射进来。

Sunlight streams in through the cave's ___opening.

学校目前有三个教师职位空缺。

The school has three ___openings for teachers right now.

电影的开头非常吸引人，立刻抓住了观众的注意力。

The ___opening of the movie was very captivating and immediately grabbed the audience's attention.

这次会议给了我一个展示自己创意的机会。

The meeting gave me an ___opening to present my creative ideas.