The number of teachers in our college __________greatly increased last term.A number of teachers in this school __________from the countryside
A.was; is
B.was; are
C.were; are
D.were; is
网友回答
B解析“the number of+名词”作主语，谓语动词常用单数形式。“a number of+名词”作主语，谓语动词常用复数形式。