单选题Sitting  at the back

问题补充：

单选题Sittingatthebackoftheroombutinfrontofsomeoldmenandwomen_____averyshygirlwithtwobrighteyes.A.wasB.areC.wereD.there was

答案：

A解析A本句为倒装句。主语是a very shy girl with two bright eyes.核心主语是a very shy girl，为单数，全句为过去时。