mysister,aswellasoneofherclassmateswholateforclass,criticizedbyMr.Hunt.A.were,wasB.was,wereC.was,wasD.were,were正解为第一空的主语不是oneofherclassmates只是一个人啊,不是所有的classmates都迟到了

Question

my sister ,as well as one of her classmates who ____late for class ,____criticized by Mr.Hunt.A.were ,was B.was,were C.was,was D.were,were 正解为
第一空的主语不是one of her classmates 只是一个人啊,不是所有的classmates都迟到了,为何选was?

Answer 1

A
第一空,先行词是CLASSMATES是复数,（迟到的人不只一个）故用were ,第二空的主语是 MY SISTER 是三单,故用was