老师让学生们排成一列检查作业。

The teacher asked the students to form a ___line for checking their homework.

音乐节公布了今年的演出阵容，包括多位知名歌手。

The concert announced this year's ___line-up, featuring several famous singers.

请乘客们在登机口排队等候。

Please ___line up at the boarding gate, passengers.