topic

会议的主要议题是未来计划。

The main ___topic of the meeting was future plans.

教授为讲座选择了一个引人入胜的话题。

The professor chose a fascinating ___topic for the lecture.

首先我们谈论了一个常见话题，比如学校活动。

First we talked about a common ___topic, like school activities.