When I entered the room, I saw a stranger ________ in my place．A.seatedB.seatC.seatingD.be seated
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A解析此题中seated作宾语补足语．seat是及物动词，sit是不及物动词．如：(×)I saw him seating by the fire．(×)I saw him seat by the fire．(×)I saw him sitted by the fire．(×)I saw him sat by the fire．(√)I saw him seated by the fire．(√) I saw him seating himself by the fire．(√)I saw him sitting by the fire．