老师主动介入调解两位学生之间的争吵。
The teacher volunteered to ___intercede in the argument between the two students.
他替朋友向老板求情，希望能保留这份工作。
He ___interceded with the boss to keep his friend's job.
老师经常在学生们的争吵中调解。
The teacher often ___intercedes in students' arguments.
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