海关官员仔细检查了每一件行李。
The customs officer ___scrutinized each piece of luggage carefully.
老师仔细检查了每个学生的作业，寻找可能的错误。
The teacher spent hours ___scrutinizing each student's homework for possible mistakes.
海关官员仔细检查了乘客的行李。
The customs officer ___scrutinized the passenger's luggage carefully.
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