老师对学生在教室里的座位安排进行了调整。

The teacher changed the ___placement of students' seats in the classroom.

这家公司提供免费的职业安置服务。

This company offers free ___placement services for job seekers.

学校会根据考试成绩来决定学生的分班情况。

The school will determine each student's ___placement based on their test scores.

这个广告的投放位置会影响它的点击率。

The ___placement of this ad will affect its click-through rate.