在社交活动中，他乐于与陌生人交往。

At social events, he feels comfortable ___mixing with new people.

研讨会鼓励参与者相互交流、分享想法。

The workshop encourages participants to ___mix and share ideas.

与不同部门的同事交流是很重要的。

It's important to ___mix with colleagues from different departments.