老师警告学生不要在教室里说脏话。

The teacher warned the students against ___swearing in the classroom.

在法庭上，他举起手宣誓要说实话。

In court, he raised his hand while ___swearing to tell the truth.

老师提醒学生们不要在课堂上说脏话。

The teacher warned the students against ___swearing in class.