notify

如果你卷入了一场交通事故，你应该通知警察。

You should ___notify the police if you are involved in a road accident.

如果您卷入交通事故，应该通知警察。

You should ___notify the police if you are involved in a traffic accident.

如果你不打算在你的房间睡觉，你必须通知主任。

You must ___notify the director if you are not going to sleep in your room.