Tomaswellashisclassmates__________asongwhentheteachercameintotheclas

发布时间:2020-08-13 07:52:11

Tom as well as his classmates __________ a song when the teacher came into the classroomA.are singingB.were singingC.is singingD.was singing

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D解析考查主谓一致。as well as连接两个主语时,谓语动词取决于前者,句意:当老师进入教室的时候,不仅汤姆的同学而且汤姆当时正在唱歌。根据语境表示过去某一时刻进行的动作应用过去进行时态,所以选D。
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