Whenheenteredtheteacher'soffice

发布时间：2020-07-27 21:02:22

When he entered the teacher's office，he found the teacher________ at the desk，doing his work carefully．A.seatingB.satC.seatedD.sitting himself

网友回答

C解析分析句子结构可知，空白处可用非谓语动词，因seat为及物动词，故空白处用seated；seating himself．
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