When everyone was ______ , the meeting began in the meeting room.

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问题 When everyone was ______ , the meeting began in the meeting room.

选项 A、sit
B、seated
C、seating

答案B

解析 考查动词用法,seat作动词时,是及物动词,用seat oneself或be seated表示“就座”。s讧是动词原形,不能用在be后;seating与be连用构成进行时态,其后应跟宾语。
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