congregate|congregated|congregating

学生们喜欢在食堂聚集聊天。

Students like to ___congregate in the cafeteria to chat.

学生们在学校门口聚集，等待校车。

The students ___congregated at the school gate, waiting for the bus.

人群开始在公园入口处聚集。

People started ___congregating at the entrance of the park.