老师依次点名每个学生来回答问题。

The teacher called on each student ___in ___turn to answer the question.

我们轮流由不同的讲师教授理论和实践。

We had different instructors for theory and practice, ___in ___turn.

会议期间，各部门主管依次汇报了他们的报告。

During the meeting, each department head presented their report ___in ___turn.